3a+72=7a-4

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Solution for 3a+72=7a-4 equation: 



3a+72=7a-4

We move all terms to the left:

3a+72-(7a-4)=0

We get rid of parentheses

3a-7a+4+72=0

We add all the numbers together, and all the variables

-4a+76=0

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

-4a=-76

a=-76/-4

a=+19

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