3(2r+1)=12

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Solution for 3(2r+1)=12 equation: 


Simplifying
3(2r + 1) = 12

Reorder the terms:
3(1 + 2r) = 12
(1 * 3 + 2r * 3) = 12
(3 + 6r) = 12

Solving
3 + 6r = 12

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + 6r = 12 + -3

Combine like terms: 3 + -3 = 0
0 + 6r = 12 + -3
6r = 12 + -3

Combine like terms: 12 + -3 = 9
6r = 9

Divide each side by '6'.
r = 1.5

Simplifying
r = 1.5

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