When x equals what number, the formula 5x + 6 minus 2-3x equals 2

5x+6-2+3x=2
8x=2-6+2
8x=-2
x=-2.5

When x=_____ The values of formula 4x + 2 and 3x-7 are opposite to each other

The values of 4x + 2 and 3x-7 are opposite to each other
Then 4x + 2 + 3x-7 = 0
7x=5
X = 5 / 7

When x = what, the values of formula 4x-5 and 3x-16 are opposite to each other
RT.

On the contrary, the number is on the number axis, on both sides of the origin, symmetrical about the origin, so the sum of the two numbers is 0
In other words, 4x-5 + 3x-16 = 0
That is 7x = 21
X=3.

Least common multiple of 12.16.20

4｜12 16 20
￣3￣4￣5￣
3×3×4×5＝240
[I'm an idiot, short division above]

How to write the ratio of three fourths to x = 3 to 12, X to 36, etc. = 3 to 54,

Three quarters x = 3 to 12
3x = 12 * 3 / 4
3x=9
x=9÷3
x=3
36 of x = 54 of 3
54x=36*3
54x=108
x=108÷54
x=2
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We know that a and B are two rational numbers. Try to compare the size of a + B and a

The answer is not certain

Second, there were 450 chickens and ducks in the feeding group. Later, half of the chickens were sold and 30 ducks were bought. At this time, the number of chickens was twice that of ducks. How many chickens and ducks were there
Your answer is wrong, but I still want to thank you for your answer!

Method 1: Analysis: 450 chickens and ducks, if you buy 30 ducks, then a total of 480 chickens and ducks 450 + 30 = 480

If 0 ≤ x ≤ 2, find the maximum and minimum of the function y = 4 ^ x-2.2 ^ x + 5

Let 2 ^ x = t,
Because 0 ≤ x ≤ 2, 1 ≤ t ≤ 4
y=4^x-2•2^x+5=t²-2t+5=(t-1)²+4,
When 1 ≤ t ≤ 4, the function (t-1) & sup2; + 4 increases
When t = 1, the minimum value of the function is 4;
When t = 4, the minimum value of the function is 13

1. 50% of the number a is 10 less than 45% of the number B. the number B is 60. What is the number a?
2. Five times of a number is 44.46 more than 32%. What's the number?
3. If you eat 1 / 4 of a bag of rice and add 20 kg, the rice in the bag will be 15% more than that in the original bag. How many kg is the original bag of rice?
4. 30% of () m is 6m; 4% less than 50cm is () cm; 25% more than 4T is () t; () cm increases by 25% to 50cm; and () min decreases by 25% to 1 hour
1.2.3. Be sure to answer the question correctly

1. Let a be x, 50% · x = 60.45% - 100.5x = 17, x = 342. Let this number be X. 5 · x = 32% · x + 44.46, 5x = 0.32x + 44.46, x = 9.53

How to get the general formula of 3,8,13,18?
Their equal difference is 5. What is the general formula? I know how to solve these problems?
Is the arithmetic sequence like this?

An = a1 + (n-1) d, an represents the general term formula, A1 represents the first term, D represents the tolerance, so the general term formula you asked is an = 3 + (n-1) 5, an = 5n-2

When x equals what number, the formula 5x + 6 minus 2-3x equals 2