9=4a+7

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Solution for 9=4a+7 equation: 



9=4a+7

We move all terms to the left:

9-(4a+7)=0

We get rid of parentheses

-4a-7+9=0

We add all the numbers together, and all the variables

-4a+2=0

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

-4a=-2

a=-2/-4

a=1/2

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