Solving inequality system 3x-2

Solving inequality system 3x-2

The solution set of the first inequality is X7 / 2
It is shown that the solution set of the inequality system is an empty set
A
∵3x-2
Solve the system of inequalities X-1 / 2 ≥ 2x-5 / 3 3x > 5 + 2 (x-1), and write the integer solution of the system of inequalities
Give me the answer in ten minutes
Solution (x-1) / 2 ≥ (2x-5) / 3
3x-3≥4x-10
-x≥-7
x≤7
Solution 3x > 5 + 2 (x-1)
3x>5+2x-2
X>3
So the solution of the inequality system is 3
Solution:
The result of solving inequality 1
x≤7
Solution to inequality 2
x＞7
The solution set of the original inequality is
7＜x≤7
The integer solution is 7
1.-20m+13=-2m-5 2.-15m=m 3.-6y=6+6y 4.-2x+3=5x-4 5.3/4x+3=5+1/4x 6.-2/3x=3/2 7.0.3x-1.5=x+0.6
8.0.125x+2.75=-1.25x 9.035x-1.5=-2.15x+3.5
1.-20m+13=-2m-5
-20m+2m=-5-13
-18m=-18
M=1
2.-15m=m
-15m-m=0
-16m=0
M=0
3.-6y=6+6y
-6y-6y=6
-12y=6
y=-1/2
4.-2x+3=5x-4
-2y-5y=-4-3
-7y=-7
Y=1
5.3/4x+3=5+1/4x
3/4x-1/4x=5-3
2/4x=2
X=4
6.-2/3x=3/2
x=--9/4
7.0.3x-1.5=x+0.6
0.3x-x=0.6+1.5
-0.7x=2.1
x=-3
8.0.125x+2.75=-1.25x
125x+2750=-1250x
125x+1250x=-2750
1375x=-2750
x=-2
9.035x-1.5=-2.15x+3.5
0.35x+2.15x=3.5+1.5
2.5x=5
X=2
Xiao Hua and Xiao Ming work out an integral multiplication problem (2x + a) (3x + b) at the same time. Xiao Hua copies "a" in the first polynomial into - A, and the result is 6x2 + 11x-10; Xiao Ming copies "3x" in the second polynomial into x, and the result is 2x2-9x + 10. (1) do you know the values of a and B in the formula? (2) Please work out the correct result of this problem
(1) According to the meaning of the question, we can get: (2x-a) (3x + b) = 6x2 + (2b-3a) x-ab = 6x2 + 11x-10; (2x + a) (x + b) = 2x2 + (a + 2b) x + AB = 2x2-9x + 10, ｜ 2B − 3A = 11A + 2B = − 9, the solution is: a = - 5, B = - 2; (2) the correct formula is (2x-5) (3x-2) = 6x2-19x + 10
Given the complete set R, set a = {x | - 2 ≤ x ≤ 5}, B = {x | - A + 1 ≤ x ≤ 2a-1}, and a &; CRB, find the value range of real number a
If a &; CRB, a = {x | - 2 ≤ x ≤ 5}, then:
(1) If a + 1 > 2a-1, then set B is an empty set and satisfies, then a2a-1 and A4 are obtained
A > 4 or a > 4
If the square of / 5x-7y-3 / + (x-2y) is 0, then x =? Y =?
From the title, 5x-7y-3 = 0
x-2y=0
So x = 2. Y = 1
/The square of 5x-7y-3 / + (x-2y) = 0
Then 5x-7y-3 = 0
x-2y=0
Then 5x-7y = 3
x=2y
Then 10y-7y = 3
Then y = 1
Then x = 2
How to memorize all the physical formulas
Physics formula encyclopedia? A lot of acridine, you can search the Internet to see, learning high school chemistry, I think it is more important to master effective high school physics learning methods. 1, is to be able to analyze the physical process, do the best problem can draw, learning physics is inseparable from graphics, from the use of mechanical design knowledge to the use of electromagnetism knowledge of complex
There is no need at all. Many of them can be deduced by themselves, as long as they know the basic ones.
I hope it helps. Have a good time.
Can not crash, to digest in court, even if the dead remember will not understand very deep, can not use!
Solution equation: 3x + 15 = 4x-18
3X+15=4X-18
4X-3X=15 +18
X=33
Xiao Gang and Xiao Ming solve a problem (2x + a) (3x + b) together. Due to carelessness, Xiao Ming miscopies the sign in front of a in a polynomial, and gets the result of 6x square plus 11x - 10. Xiao Gang omits to copy the coefficient of X in the second polynomial, and gets the correct result of 2x to the second power - 9x + 10A. What are the values of B?
Friends who ask questions from mobile phones can click "comment" in the upper right corner of the client, and then they can choose "satisfied, the problem has been solved perfectly"
Given the set a = {x | x ≤ a}, B = {x | 1 ≤ x ≤ 2}, and a ∪ (CRB) = R, find the value range of real number a
1≤a≤2