(2z-7)-(7-2)-2z=0

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Solution for (2z-7)-(7-2)-2z=0 equation: 


Simplifying
(2z + -7) + -1(7 + -2) + -2z = 0

Reorder the terms:
(-7 + 2z) + -1(7 + -2) + -2z = 0

Remove parenthesis around (-7 + 2z)
-7 + 2z + -1(7 + -2) + -2z = 0

Combine like terms: 7 + -2 = 5
-7 + 2z + -1(5) + -2z = 0

Multiply -1 * 5
-7 + 2z + -5 + -2z = 0

Reorder the terms:
-7 + -5 + 2z + -2z = 0

Combine like terms: -7 + -5 = -12
-12 + 2z + -2z = 0

Combine like terms: 2z + -2z = 0
-12 + 0 = 0
-12 = 0

Solving
-12 = 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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