4r+7-4r+5=

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Solution for 4r+7-4r+5= equation: 


Simplifying
4r + 7 + -4r + 5 = 0

Reorder the terms:
7 + 5 + 4r + -4r = 0

Combine like terms: 7 + 5 = 12
12 + 4r + -4r = 0

Combine like terms: 4r + -4r = 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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