Question

5a + 7+ 3(a_+5) = 70 What is the value of a?

Answer 1

Explanation:

5a + 7+ 3(a_+5) = 70 expand left side

5a + 7 + 3a + 15 = 70 gather 'like terms'

(5a+3a) + (7+15) = 70 simplfy ....and subtract 22 from both sides

8a = 48 divide through by 8

a = 6