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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

21a-(-4a+7)+7=0

We get rid of parentheses

21a+4a-7+7=0

We add all the numbers together, and all the variables

25a=0

a=0/25

a=0

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