d/4-7=21

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Solution for d/4-7=21 equation: 



d/4-7=21

We move all terms to the left:

d/4-7-(21)=0

We add all the numbers together, and all the variables

d/4-28=0

We multiply all the terms by the denominator


d-28*4=0

We add all the numbers together, and all the variables

d-112=0

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

d=112

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