10+2d=-10+7d

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Solution for 10+2d=-10+7d equation: 



10+2d=-10+7d

We move all terms to the left:

10+2d-(-10+7d)=0

We add all the numbers together, and all the variables

2d-(7d-10)+10=0

We get rid of parentheses

2d-7d+10+10=0

We add all the numbers together, and all the variables

-5d+20=0

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

-5d=-20

d=-20/-5

d=+4

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