45=3+7d

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Solution for 45=3+7d equation: 



45=3+7d

We move all terms to the left:

45-(3+7d)=0

We add all the numbers together, and all the variables

-(7d+3)+45=0

We get rid of parentheses

-7d-3+45=0

We add all the numbers together, and all the variables

-7d+42=0

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

-7d=-42

d=-42/-7

d=+6

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