Question

5(3а – 3) = 12 + 3(3а – 7)​

Answer 1

Answer:15a - 15 = 15 (3a - 7)

15a - 15 = 45a - 105

15a - 45a = - 105 + 15

- 30a = -90

a = - 90 / - 30

a = 3

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Step-by-step explanation:

Answer 2

Answer:

15a - 15 = 12 + 9a - 21

-15 -12 +21= 9a - 15 a

-27 +21 = - 6a

- 6 = -6a

a=0