7-2a=3a-4a

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



7-2a=3a-4a

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2a-(-1a)+7=0

We get rid of parentheses

-2a+1a+7=0

We add all the numbers together, and all the variables

-1a+7=0

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

-a=-7

a=-7/-1

a=+7

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