3r=12+2r

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Solution for 3r=12+2r equation: 


Simplifying
3r = 12 + 2r

Solving
3r = 12 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
3r + -2r = 12 + 2r + -2r

Combine like terms: 3r + -2r = 1r
1r = 12 + 2r + -2r

Combine like terms: 2r + -2r = 0
1r = 12 + 0
1r = 12

Divide each side by '1'.
r = 12

Simplifying
r = 12

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