4r-s=9

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Solution for 4r-s=9 equation: 


Simplifying
4r + -1s = 9

Solving
4r + -1s = 9

Solving for variable 'r'.

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

Add 's' to each side of the equation.
4r + -1s + s = 9 + s

Combine like terms: -1s + s = 0
4r + 0 = 9 + s
4r = 9 + s

Divide each side by '4'.
r = 2.25 + 0.25s

Simplifying
r = 2.25 + 0.25s

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