12r-6r+4r=20

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Solution for 12r-6r+4r=20 equation: 


Simplifying
12r + -6r + 4r = 20

Combine like terms: 12r + -6r = 6r
6r + 4r = 20

Combine like terms: 6r + 4r = 10r
10r = 20

Solving
10r = 20

Solving for variable 'r'.

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

Divide each side by '10'.
r = 2

Simplifying
r = 2

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