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

asked Apr 16, 2021 155k views

1 vote

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2 votes

Answer:

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

Gros Lalo answered Apr 21, 2021

5.9k points

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