4a+7=4a+9a

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Solution for 4a+7=4a+9a equation: 



4a+7=4a+9a

We move all terms to the left:

4a+7-(4a+9a)=0

We add all the numbers together, and all the variables

4a-(+13a)+7=0

We get rid of parentheses

4a-13a+7=0

We add all the numbers together, and all the variables

-9a+7=0

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

-9a=-7

a=-7/-9

a=7/9

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