7(8a+8)=840

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Solution for 7(8a+8)=840 equation: 



7(8a+8)=840

We move all terms to the left:

7(8a+8)-(840)=0

We multiply parentheses

56a+56-840=0

We add all the numbers together, and all the variables

56a-784=0

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

56a=784

a=784/56

a=14

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