-7=-4d+9

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Solution for -7=-4d+9 equation: 



-7=-4d+9

We move all terms to the left:

-7-(-4d+9)=0

We get rid of parentheses

4d-9-7=0

We add all the numbers together, and all the variables

4d-16=0

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

4d=16

d=16/4

d=4

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