-9(-7a+4)=297-18

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Solution for -9(-7a+4)=297-18 equation: 



-9(-7a+4)=297-18

We move all terms to the left:

-9(-7a+4)-(297-18)=0

We add all the numbers together, and all the variables

-9(-7a+4)-279=0

We multiply parentheses

63a-36-279=0

We add all the numbers together, and all the variables

63a-315=0

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

63a=315

a=315/63

a=5

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