126+7d=42-3d

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Solution for 126+7d=42-3d equation: 



126+7d=42-3d

We move all terms to the left:

126+7d-(42-3d)=0

We add all the numbers together, and all the variables

7d-(-3d+42)+126=0

We get rid of parentheses

7d+3d-42+126=0

We add all the numbers together, and all the variables

10d+84=0

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

10d=-84

d=-84/10

d=-8+2/5

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