6a+9=4a-7

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Solution for 6a+9=4a-7 equation: 



6a+9=4a-7

We move all terms to the left:

6a+9-(4a-7)=0

We get rid of parentheses

6a-4a+7+9=0

We add all the numbers together, and all the variables

2a+16=0

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

2a=-16

a=-16/2

a=-8

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