-2r+7r=12-7r

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Solution for -2r+7r=12-7r equation: 


Simplifying
-2r + 7r = 12 + -7r

Combine like terms: -2r + 7r = 5r
5r = 12 + -7r

Solving
5r = 12 + -7r

Solving for variable 'r'.

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

Add '7r' to each side of the equation.
5r + 7r = 12 + -7r + 7r

Combine like terms: 5r + 7r = 12r
12r = 12 + -7r + 7r

Combine like terms: -7r + 7r = 0
12r = 12 + 0
12r = 12

Divide each side by '12'.
r = 1

Simplifying
r = 1

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