0=2r-4r

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Solution for 0=2r-4r equation: 


Simplifying
0 = 2r + -4r

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

Solving
0 = -2r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '2r' to each side of the equation.
0 + 2r = -2r + 2r
Remove the zero:
2r = -2r + 2r

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

Divide each side by '2'.
r = 0

Simplifying
r = 0

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