-7(a+3)=-49a

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Solution for -7(a+3)=-49a equation: 



-7(a+3)=-49a

We move all terms to the left:

-7(a+3)-(-49a)=0

We multiply parentheses

-7a-(-49a)-21=0

We get rid of parentheses

-7a+49a-21=0

We add all the numbers together, and all the variables

42a-21=0

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

42a=21

a=21/42

a=1/2

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