7=-2d-3

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Solution for 7=-2d-3 equation: 



7=-2d-3

We move all terms to the left:

7-(-2d-3)=0

We get rid of parentheses

2d+3+7=0

We add all the numbers together, and all the variables

2d+10=0

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

2d=-10

d=-10/2

d=-5

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