3(r-10)=12

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Solution for 3(r-10)=12 equation: 


Simplifying
3(r + -10) = 12

Reorder the terms:
3(-10 + r) = 12
(-10 * 3 + r * 3) = 12
(-30 + 3r) = 12

Solving
-30 + 3r = 12

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + 3r = 12 + 30

Combine like terms: -30 + 30 = 0
0 + 3r = 12 + 30
3r = 12 + 30

Combine like terms: 12 + 30 = 42
3r = 42

Divide each side by '3'.
r = 14

Simplifying
r = 14

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