Question

How do you solve `\frac { 7} { 2} = \frac { a - 1} { 8}`?

Answer 1

`a=29`

Explanation:

1) Cross multiply.
You get `56 = 2a-2`
2) Isolate the variable
You get `2a = 58`
3) Divide both sides by 2
You get 29 as the answer.