4(3+r)=12

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Solution for 4(3+r)=12 equation: 


Simplifying
4(3 + r) = 12
(3 * 4 + r * 4) = 12
(12 + 4r) = 12

Add '-12' to each side of the equation.
12 + -12 + 4r = 12 + -12

Combine like terms: 12 + -12 = 0
0 + 4r = 12 + -12
4r = 12 + -12

Combine like terms: 12 + -12 = 0
4r = 0

Solving
4r = 0

Solving for variable 'r'.

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

Divide each side by '4'.
r = 0

Simplifying
r = 0

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