2r=2r-4

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Solution for 2r=2r-4 equation: 


Simplifying
2r = 2r + -4

Reorder the terms:
2r = -4 + 2r

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

Combine like terms: 2r + -2r = 0
0 = -4 + 2r + -2r

Combine like terms: 2r + -2r = 0
0 = -4 + 0
0 = -4

Solving
0 = -4

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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