25-7a=28-4a+7a

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Solution for 25-7a=28-4a+7a equation: 



25-7a=28-4a+7a

We move all terms to the left:

25-7a-(28-4a+7a)=0

We add all the numbers together, and all the variables

-7a-(3a+28)+25=0

We get rid of parentheses

-7a-3a-28+25=0

We add all the numbers together, and all the variables

-10a-3=0

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

-10a=3

a=3/-10

a=-3/10

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