3r+5r-4r=20

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Solution for 3r+5r-4r=20 equation: 


Simplifying
3r + 5r + -4r = 20

Combine like terms: 3r + 5r = 8r
8r + -4r = 20

Combine like terms: 8r + -4r = 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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