rx-12=8

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Solution for rx-12=8 equation: 


Simplifying
rx + -12 = 8

Reorder the terms:
-12 + rx = 8

Solving
-12 + rx = 8

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + rx = 8 + 12

Combine like terms: -12 + 12 = 0
0 + rx = 8 + 12
rx = 8 + 12

Combine like terms: 8 + 12 = 20
rx = 20

Divide each side by 'x'.
r = 20x-1

Simplifying
r = 20x-1

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