21d+4=19d-34

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Solution for 21d+4=19d-34 equation: 



21d+4=19d-34

We move all terms to the left:

21d+4-(19d-34)=0

We get rid of parentheses

21d-19d+34+4=0

We add all the numbers together, and all the variables

2d+38=0

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

2d=-38

d=-38/2

d=-19

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