7+9d=7d+5

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Solution for 7+9d=7d+5 equation: 



7+9d=7d+5

We move all terms to the left:

7+9d-(7d+5)=0

We get rid of parentheses

9d-7d-5+7=0

We add all the numbers together, and all the variables

2d+2=0

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

2d=-2

d=-2/2

d=-1

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