7+9a=2a-14

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Solution for 7+9a=2a-14 equation: 



7+9a=2a-14

We move all terms to the left:

7+9a-(2a-14)=0

We get rid of parentheses

9a-2a+14+7=0

We add all the numbers together, and all the variables

7a+21=0

We move all terms containing a to the left, all other terms to the right

7a=-21

a=-21/7

a=-3

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