7a+28=-7

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Solution for 7a+28=-7 equation: 



7a+28=-7

We move all terms to the left:

7a+28-(-7)=0

We add all the numbers together, and all the variables

7a+35=0

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

7a=-35

a=-35/7

a=-5

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