7r-3r=20

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Solution for 7r-3r=20 equation: 


Simplifying
7r + -3r = 20

Combine like terms: 7r + -3r = 4r
4r = 20

Solving
4r = 20

Solving for variable 'r'.

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

Divide each side by '4'.
r = 5

Simplifying
r = 5

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