-2(a-4)=-3(a-7)

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



-2(a-4)=-3(a-7)

We move all terms to the left:

-2(a-4)-(-3(a-7))=0

We multiply parentheses

-2a-(-3(a-7))+8=0



We calculate terms in parentheses: -(-3(a-7)), so:

-3(a-7)

We multiply parentheses

-3a+21

Back to the equation:

-(-3a+21)



We get rid of parentheses

-2a+3a-21+8=0

We add all the numbers together, and all the variables

a-13=0

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

a=13

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