7d+2=2d+12

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Solution for 7d+2=2d+12 equation: 



7d+2=2d+12

We move all terms to the left:

7d+2-(2d+12)=0

We get rid of parentheses

7d-2d-12+2=0

We add all the numbers together, and all the variables

5d-10=0

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

5d=10

d=10/5

d=2

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