11a+7=9a+13

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Solution for 11a+7=9a+13 equation: 



11a+7=9a+13

We move all terms to the left:

11a+7-(9a+13)=0

We get rid of parentheses

11a-9a-13+7=0

We add all the numbers together, and all the variables

2a-6=0

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

2a=6

a=6/2

a=3

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