12(r-9)=147

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Solution for 12(r-9)=147 equation:


Simplifying
12(r + -9) = 147

Reorder the terms:
12(-9 + r) = 147
(-9 * 12 + r * 12) = 147
(-108 + 12r) = 147

Solving
-108 + 12r = 147

Solving for variable 'r'.

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

Add '108' to each side of the equation.
-108 + 108 + 12r = 147 + 108

Combine like terms: -108 + 108 = 0
0 + 12r = 147 + 108
12r = 147 + 108

Combine like terms: 147 + 108 = 255
12r = 255

Divide each side by '12'.
r = 21.25

Simplifying
r = 21.25

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