-4-2z=-7-2z

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Solution for -4-2z=-7-2z equation: 


Simplifying
-4 + -2z = -7 + -2z

Add '2z' to each side of the equation.
-4 + -2z + 2z = -7 + -2z + 2z

Combine like terms: -2z + 2z = 0
-4 + 0 = -7 + -2z + 2z
-4 = -7 + -2z + 2z

Combine like terms: -2z + 2z = 0
-4 = -7 + 0
-4 = -7

Solving
-4 = -7

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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