7=d-d+5

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Solution for 7=d-d+5 equation: 


Simplifying
7 = d + -1d + 5

Reorder the terms:
7 = 5 + d + -1d

Combine like terms: d + -1d = 0
7 = 5 + 0
7 = 5

Solving
7 = 5

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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