-3a-2(7a-1)=-40-3a

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Solution for -3a-2(7a-1)=-40-3a equation: 



-3a-2(7a-1)=-40-3a

We move all terms to the left:

-3a-2(7a-1)-(-40-3a)=0

We add all the numbers together, and all the variables

-3a-2(7a-1)-(-3a-40)=0

We multiply parentheses

-3a-14a-(-3a-40)+2=0

We get rid of parentheses

-3a-14a+3a+40+2=0

We add all the numbers together, and all the variables

-14a+42=0

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

-14a=-42

a=-42/-14

a=+3

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