R-r+6r=12

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Solution for R-r+6r=12 equation: 


Simplifying
R + -1r + 6r = 12

Combine like terms: -1r + 6r = 5r
R + 5r = 12

Solving
R + 5r = 12

Solving for variable 'R'.

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

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

Combine like terms: 5r + -5r = 0
R + 0 = 12 + -5r
R = 12 + -5r

Simplifying
R = 12 + -5r

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