7=5+2d

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Solution for 7=5+2d equation: 



7=5+2d

We move all terms to the left:

7-(5+2d)=0

We add all the numbers together, and all the variables

-(2d+5)+7=0

We get rid of parentheses

-2d-5+7=0

We add all the numbers together, and all the variables

-2d+2=0

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

-2d=-2

d=-2/-2

d=1

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