8(2d+5)-3(3d-9)=-21

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Solution for 8(2d+5)-3(3d-9)=-21 equation: 



8(2d+5)-3(3d-9)=-21

We move all terms to the left:

8(2d+5)-3(3d-9)-(-21)=0

We add all the numbers together, and all the variables

8(2d+5)-3(3d-9)+21=0

We multiply parentheses

16d-9d+40+27+21=0

We add all the numbers together, and all the variables

7d+88=0

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

7d=-88

d=-88/7

d=-12+4/7

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