2+5(3-7a)=122

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Solution for 2+5(3-7a)=122 equation: 



2+5(3-7a)=122

We move all terms to the left:

2+5(3-7a)-(122)=0

We add all the numbers together, and all the variables

5(-7a+3)+2-122=0

We add all the numbers together, and all the variables

5(-7a+3)-120=0

We multiply parentheses

-35a+15-120=0

We add all the numbers together, and all the variables

-35a-105=0

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

-35a=105

a=105/-35

a=-3

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