4(2a-2)+7(1-3a)=77

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Solution for 4(2a-2)+7(1-3a)=77 equation: 



4(2a-2)+7(1-3a)=77

We move all terms to the left:

4(2a-2)+7(1-3a)-(77)=0

We add all the numbers together, and all the variables

4(2a-2)+7(-3a+1)-77=0

We multiply parentheses

8a-21a-8+7-77=0

We add all the numbers together, and all the variables

-13a-78=0

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

-13a=78

a=78/-13

a=-6

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