-15-7z=-14-7z

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Solution for -15-7z=-14-7z equation: 


Simplifying
-15 + -7z = -14 + -7z

Add '7z' to each side of the equation.
-15 + -7z + 7z = -14 + -7z + 7z

Combine like terms: -7z + 7z = 0
-15 + 0 = -14 + -7z + 7z
-15 = -14 + -7z + 7z

Combine like terms: -7z + 7z = 0
-15 = -14 + 0
-15 = -14

Solving
-15 = -14

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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