Question

7a+3=4a-18 what is the a

Answer 1

a = -7

Explanation:

7a+3=4a-18

Subtract 4a from each side

7a-4a+3=4a-4a-18

3a +3 = -18

Subtract 3 from each side

3a +3-3 = -18-3

3a= -21

Divide each side by 3

3a/3 = -21/3

a = -7