Question

Can someone please help me with this?

Answer 1

Explanation:

4a - 5b = 7

substract 4a from both sides

4a - 5b - 4a = 7 - 4a

positive 4a with negative 4a

5b = 7 - 4a

devide both sides by 5

`(5b)/(5) = (7 - 4a)/(5)`

`b = (7 - 4a)/(5)`