12r-84s=

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Solution for 12r-84s= equation:


Simplifying
12r + -84s = 0

Solving
12r + -84s = 0

Solving for variable 'r'.

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

Add '84s' to each side of the equation.
12r + -84s + 84s = 0 + 84s

Combine like terms: -84s + 84s = 0
12r + 0 = 0 + 84s
12r = 0 + 84s
Remove the zero:
12r = 84s

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

Simplifying
r = 7s

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