7r-9s=84

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Solution for 7r-9s=84 equation: 


Simplifying
7r + -9s = 84

Solving
7r + -9s = 84

Solving for variable 'r'.

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

Add '9s' to each side of the equation.
7r + -9s + 9s = 84 + 9s

Combine like terms: -9s + 9s = 0
7r + 0 = 84 + 9s
7r = 84 + 9s

Divide each side by '7'.
r = 12 + 1.285714286s

Simplifying
r = 12 + 1.285714286s

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