Question

Solve for x: 15x + 121 = 256

Solve the inequality: 4x + 8 > 2x - 10

Solve for x: 5x + 7 = 42

Answer 1

x=9, x>-9, x=7

Explanation:

`15x + 121 = 256 \\ 15x = 256 - 121 \\ 15x = 135 \\ (15x)/(15) = (135)/(15) \\ x = 9`

`4x + 8 > 2x - 10 \\ 4x - 2x > - 10 - 8 \\ 2x = - 18 \\ (2x)/(2) = ( - 18)/(2) \\ x > - 9`

`5x + 7 = 42 \\ 5x = 42 - 7 \\ 5x = 35 \\ (5x)/(5) = (35)/(5) \\ x = 7`

Answer 2

Explanation:

15x + 121 = 256 the answer is x = 9

4x + 8 > 2x - 10 the answer is x > -9

5x + 7 = 42 the answer is x = 7