12(r-20)=36

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Solution for 12(r-20)=36 equation: 


Simplifying
12(r + -20) = 36

Reorder the terms:
12(-20 + r) = 36
(-20 * 12 + r * 12) = 36
(-240 + 12r) = 36

Solving
-240 + 12r = 36

Solving for variable 'r'.

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

Add '240' to each side of the equation.
-240 + 240 + 12r = 36 + 240

Combine like terms: -240 + 240 = 0
0 + 12r = 36 + 240
12r = 36 + 240

Combine like terms: 36 + 240 = 276
12r = 276

Divide each side by '12'.
r = 23

Simplifying
r = 23

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