Question

7r+3r-8=8+2r. Solve?

Answer 1

`7r+3r-8=8+2r\\\\10r-8=8+2r\ \ \ \ |+8\\\\10r=16+2r\ \ \ \ |-2r\\\\8r=16\ \ \ \ |:8\\\\\boxed{r=2}`

Answer 2

Given: 7r+3r-8=8+2r

Simplify: 10r-8=8+2r

Addition: add 8 to each side: 10r=16+2r

Subtraction: Take 2r from each side: 8r=16

Division: Divide each side by 8 for answer: r=2

Answer: r=2