5a-7=5+9a

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Solution for 5a-7=5+9a equation: 



5a-7=5+9a

We move all terms to the left:

5a-7-(5+9a)=0

We add all the numbers together, and all the variables

5a-(9a+5)-7=0

We get rid of parentheses

5a-9a-5-7=0

We add all the numbers together, and all the variables

-4a-12=0

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

-4a=12

a=12/-4

a=-3

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