5a+4=4a-21

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Solution for 5a+4=4a-21 equation: 



5a+4=4a-21

We move all terms to the left:

5a+4-(4a-21)=0

We get rid of parentheses

5a-4a+21+4=0

We add all the numbers together, and all the variables

a+25=0

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

a=-25

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