9r+2s=-99

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Solution for 9r+2s=-99 equation: 


Simplifying
9r + 2s = -99

Solving
9r + 2s = -99

Solving for variable 'r'.

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

Add '-2s' to each side of the equation.
9r + 2s + -2s = -99 + -2s

Combine like terms: 2s + -2s = 0
9r + 0 = -99 + -2s
9r = -99 + -2s

Divide each side by '9'.
r = -11 + -0.2222222222s

Simplifying
r = -11 + -0.2222222222s

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