Question

3x=28-x 5x+12=8x+30 33+8x=-5x+72

Answer 1

1. 5х +12 =8х-30-8х
13х+12=30
13х=30-12
13х=18
х=18:12





2.

Answer 2

To solve each of these equations, we can use basic algebraic operations to isolate the variable on one side of the equation. Here are the steps to solve each equation:

1. 3x = 28 - x

Add x to both sides to get:

4x = 28

Divide both sides by 4 to get:

x = 7

Therefore, the solution to this equation is x = 7.

2. 5x + 12 = 8x + 30

Subtract 5x from both sides to get:

12 = 3x + 30

Subtract 30 from both sides to get:

-18 = 3x

Divide both sides by 3 to get:

x = -6

Therefore, the solution to this equation is x = -6.

3. 33 + 8x = -5x + 72

Add 5x to both sides to get:

33 + 13x = 72

Subtract 33 from both sides to get:

13x = 39

Divide both sides by 13 to get:

x = 3

Therefore, the solution to this equation is x = 3.