3a-4=-9-4a

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Solution for 3a-4=-9-4a equation: 



3a-4=-9-4a

We move all terms to the left:

3a-4-(-9-4a)=0

We add all the numbers together, and all the variables

3a-(-4a-9)-4=0

We get rid of parentheses

3a+4a+9-4=0

We add all the numbers together, and all the variables

7a+5=0

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

7a=-5

a=-5/7

a=-5/7

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