4 years ago

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

Mathematics

1 answer:

natima [27]4 years ago

6 0

Answer:

a = -7

Step-by-step 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

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