7+4(2a+15)=-9

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Solution for 7+4(2a+15)=-9 equation: 



7+4(2a+15)=-9

We move all terms to the left:

7+4(2a+15)-(-9)=0

We add all the numbers together, and all the variables

4(2a+15)+16=0

We multiply parentheses

8a+60+16=0

We add all the numbers together, and all the variables

8a+76=0

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

8a=-76

a=-76/8

a=-9+1/2

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