7-d=-(d-7)

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Solution for 7-d=-(d-7) equation:


7-d=-(d-7)

We simplify the equation to the form, which is simple to understand 
7-d=-(d-7)

Remove unnecessary parentheses
7-d=-1d+7

We move all terms containing d to the left and all other terms to the right. 
-1d+1d=+7-7

We simplify left and right side of the equation. 
d=0

0=0

This equation is an identity, so all real numbers are solutions.

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