-d-7d=-8d

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Solution for -d-7d=-8d equation: 


Simplifying
-1d + -7d = -8d

Combine like terms: -1d + -7d = -8d
-8d = -8d

Add '8d' to each side of the equation.
-8d + 8d = -8d + 8d

Combine like terms: -8d + 8d = 0
0 = -8d + 8d

Combine like terms: -8d + 8d = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

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

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