5a-7=7a-9

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



5a-7=7a-9

We move all terms to the left:

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

We get rid of parentheses

5a-7a+9-7=0

We add all the numbers together, and all the variables

-2a+2=0

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

-2a=-2

a=-2/-2

a=1

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