3a=4a+7

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Solution for 3a=4a+7 equation: 



3a=4a+7

We move all terms to the left:

3a-(4a+7)=0

We get rid of parentheses

3a-4a-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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