3r+r=28

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Solution for 3r+r=28 equation: 


Simplifying
3r + r = 28

Combine like terms: 3r + r = 4r
4r = 28

Solving
4r = 28

Solving for variable 'r'.

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

Divide each side by '4'.
r = 7

Simplifying
r = 7

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