Three people live in a hotel, 10 yuan each. Because of the discount, the boss returned 5 yuan. The waiter stole two yuan and gave each one one yuan. Where is the other one yuan

Three people live in a hotel, 10 yuan each. Because of the discount, the boss returned 5 yuan. The waiter stole two yuan and gave each one one yuan. Where is the other one yuan

There is a mistake in your question. According to the meaning of the title, it should be that each of the three people gave 9 yuan (because there is a refund), that is, a total of 27 yuan. After the waiter took 2 yuan, the boss paid 25 yuan. It's a very simple question. But you finally asked where the other one is. According to your meaning, 9 * 3 = 27, plus 2 yuan for the waiter, A total of 29 yuan ~ and they gave a total of 30 yuan ~ so they lost a piece out of thin air ~ do you know where you are wrong? The fault is that you should not be 27 + 2 = 29, but 27-2 = 25, This 27 yuan money already contains 2 yuan of money that has been removed. In fact, this problem itself is just two very simple equations. The reason why you find it incredible is that you can't understand the logical relationship~

How many turns does the paper have
How many sheets of paper are there and how big are they

According to the size of the paper is divided into full open, open, four open. Eight open, 16 open. 32 open. 64 open
Let's take the printing paper that we see more often. A3paper is 8, a4paper is 16, then half of A4 is 32, so the difference is OK (pure Ctrl + C)
I'm sorry, but that's right

A3 paper = how many
What time do I ask
What time do I ask?

18 Kai

(- 1 / 2XY) (2XY) ^ 3 in addition to 2XY ^ 2 how to simplify? There is another question (x ^ 2 + 5x) / (x-1) minus (2x ^ 2 + 4x) / x ^ 2-x
Maybe I can

（-1/2xy）(2xy)^3÷2xy^2=（-(2xy)^3/2xy）×1/2xy^2=-(2xy)^3/(2xy)^3=-1(x^2+5x)/(x-1) -(2x^2+4x)/x^2-x=[x(x+5)/x-1]-2x(x+4)/x(x-1)=[x^2(x+5)-2x(x+2)] /x(x-1)=[x(x+5)-2(x+2)]/x-1=(x^2+5x-2x-4)/x-1=(x+4)...

When Xiao Hu solves the denominator of the equation (2x-1) / 3 = (x + a) / 3-1, the "- 1" on the right side of the equation is not multiplied by 3. As a result, the solution of the equation is x = 2. Try to determine the value of a and solve the equation correctly!

(2x - 1) = (x + a) - 1
Substituting x = 2 gives:
3 = a + 1
a = 2
So the original equation is (2x - 1) / 3 = (x + 2) / 3 - 1
(2x - 1)/3 = (x + 2)/3 - 1
2x - 1 = x + 2 - 3
x = 0

When solving the equation 2x-1 / 3 = x + A / 3-1 with the denominator removed, the Right-1 of the equation is not multiplied by 3, and the solution is x = 2. Try to find the value of a and correctly solve the equation

2X-1/3=X+A/3-1
6X-1=3X+A-1
6X-3X=A-1+1
3X=A
A=6
A = 6
2X-1/3=X+A/3-3
6X-1=3X+A-3
3X=A-2
3X=6-2
3X=4
X=4/3

A mathematical problem: a student solves the equation (2x-1) / 3 = (x + a) / 3-1 about X. when the denominator is removed, the Right-1 is not multiplied by 3. The solution of the equation is x = 3, and a is the solution of the original equation

When the - 1 on the right side of the denominator is not multiplied by 3, the equation is 2x-1 = x + A-1, and the solution is x = a = 3
So a = 3. Take a = 3 into the original equation and get x = 1

When solving the equation 2x-1 / 3 = x + A-1 and removing the denominator, THE-1 on the right side of the equation is not multiplied by 3, so the solution of the equation is x = 2, and the value of a and the solution of the equation are obtained

From the meaning of the title: 2x-1 = x + A-1, substitute x = 2 into 2x-1 = x + A-1, a = 2
Substituting a = 2 into the original equation: 2x-1 / 3 = x + 2 / 3-1, the solution: x = 0

When solving the equation 2x-1 / 3 = x + A / 3-2, the - 2 on the right side of the equation is not multiplied by 3, so we can get x = 1, try to find the value of a, and get the solution of the original equation

If - 2 on the right is not multiplied by 3, then the equation should be reduced to 6x-1 = 3x + A-2,
Substituting x = 1, we can get 6-1 = 3 + A-1, and the solution is a = 3,
So the original equation is 2x-1 / 3 = x + 1-2,
The solution of the equation is x = 1 / 3 + 1-2 = - 2 / 3

When solving the equation (2x-1) / 3 = [(x + a) / 3] - 1 to remove the denominator, the - 1 on the right side of the equation is not multiplied by 3, so the solution of the equation is x = 2
And solve the equation correctly

The - 1 on the right side of the starting equation is not multiplied by 3
Then the equation of actual solution is:
（2x-1）=（x+a）-1
X = 2 into it
（2*2-1）=（2+a）-1
The solution is a = 2
When a = 2, the original equation is solved
（2x-1）/3=【（x+2）/3】-1
2x-1=x+2-3
The solution is x = 0