d+5=20+2d

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Solution for d+5=20+2d equation: 



d+5=20+2d

We move all terms to the left:

d+5-(20+2d)=0

We add all the numbers together, and all the variables

d-(2d+20)+5=0

We get rid of parentheses

d-2d-20+5=0

We add all the numbers together, and all the variables

-1d-15=0

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

-d=15

d=15/-1

d=-15

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