30+1.50=12d+3

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Solution for 30+1.50=12d+3 equation: 



30+1.50=12d+3

We move all terms to the left:

30+1.50-(12d+3)=0

We add all the numbers together, and all the variables

-(12d+3)+31.5=0

We get rid of parentheses

-12d-3+31.5=0

We add all the numbers together, and all the variables

-12d+28.5=0

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

-12d=-28.5

d=-28.5/-12

d=2+1/2.6666666666667

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