45-3d=d+9

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Solution for 45-3d=d+9 equation: 



45-3d=d+9

We move all terms to the left:

45-3d-(d+9)=0

We get rid of parentheses

-3d-d-9+45=0

We add all the numbers together, and all the variables

-4d+36=0

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

-4d=-36

d=-36/-4

d=+9

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