7=10-3d

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Solution for 7=10-3d equation: 



7=10-3d

We move all terms to the left:

7-(10-3d)=0

We add all the numbers together, and all the variables

-(-3d+10)+7=0

We get rid of parentheses

3d-10+7=0

We add all the numbers together, and all the variables

3d-3=0

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

3d=3

d=3/3

d=1

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