-7d+14=-21

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Solution for -7d+14=-21 equation: 



-7d+14=-21

We move all terms to the left:

-7d+14-(-21)=0

We add all the numbers together, and all the variables

-7d+35=0

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

-7d=-35

d=-35/-7

d=+5

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