3r+r=0

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Solution for 3r+r=0 equation: 


Simplifying
3r + r = 0

Combine like terms: 3r + r = 4r
4r = 0

Solving
4r = 0

Solving for variable 'r'.

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

Divide each side by '4'.
r = 0

Simplifying
r = 0

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