7d-9=7d

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Solution for 7d-9=7d equation: 


Simplifying
7d + -9 = 7d

Reorder the terms:
-9 + 7d = 7d

Add '-7d' to each side of the equation.
-9 + 7d + -7d = 7d + -7d

Combine like terms: 7d + -7d = 0
-9 + 0 = 7d + -7d
-9 = 7d + -7d

Combine like terms: 7d + -7d = 0
-9 = 0

Solving
-9 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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