2r=-9+r

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Solution for 2r=-9+r equation: 


Simplifying
2r = -9 + r

Solving
2r = -9 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
2r + -1r = -9 + r + -1r

Combine like terms: 2r + -1r = 1r
1r = -9 + r + -1r

Combine like terms: r + -1r = 0
1r = -9 + 0
1r = -9

Divide each side by '1'.
r = -9

Simplifying
r = -9

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