a+7=28a+7=28

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Solution for a+7=28a+7=28 equation: 



a+7=28a+7=28

We move all terms to the left:

a+7-(28a+7)=0

We get rid of parentheses

a-28a-7+7=0

We add all the numbers together, and all the variables

-27a=0

a=0/-27

a=0

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