7d/12=4.2

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Solution for 7d/12=4.2 equation: 



7d/12=4.2

We move all terms to the left:

7d/12-(4.2)=0

We add all the numbers together, and all the variables

7d/12-4.2=0

We multiply all the terms by the denominator


7d-(4.2)*12=0

We add all the numbers together, and all the variables

7d-50.4=0

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

7d=50.4

d=50.4/7

d=7+1/5

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