7a=3a+4a

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Solution for 7a=3a+4a equation: 



7a=3a+4a

We move all terms to the left:

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

We add all the numbers together, and all the variables

7a-(+7a)=0

We get rid of parentheses

7a-7a=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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