-2(5d+3)+6d+12=42

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Solution for -2(5d+3)+6d+12=42 equation: 



-2(5d+3)+6d+12=42

We move all terms to the left:

-2(5d+3)+6d+12-(42)=0

We add all the numbers together, and all the variables

6d-2(5d+3)-30=0

We multiply parentheses

6d-10d-6-30=0

We add all the numbers together, and all the variables

-4d-36=0

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

-4d=36

d=36/-4

d=-9

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