Question

[2.04] MA.8.A.4.2

Find the solution to the inequality

2x + 8(x-10) > 30

Answer 1

x > 11

Steps:

1) multiply the number outside the parentheses by those inside the parentheses: 8(x-10) = 8x - 80
so the problem is now: 2x + 8x - 80 > 30

2) combine like terms: 10x - 80 > 30

3) isolate the x term on the left side by adding 80 to both sides: 10x > 110

4) divide both sides by 10 to find x:
x > 11