3r+7r=20

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Solution for 3r+7r=20 equation: 


Simplifying
3r + 7r = 20

Combine like terms: 3r + 7r = 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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