-2r+4r+2r=40

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Solution for -2r+4r+2r=40 equation: 


Simplifying
-2r + 4r + 2r = 40

Combine like terms: -2r + 4r = 2r
2r + 2r = 40

Combine like terms: 2r + 2r = 4r
4r = 40

Solving
4r = 40

Solving for variable 'r'.

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

Divide each side by '4'.
r = 10

Simplifying
r = 10

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