2r+12=30

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Solution for 2r+12=30 equation: 


Simplifying
2r + 12 = 30

Reorder the terms:
12 + 2r = 30

Solving
12 + 2r = 30

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + 2r = 30 + -12

Combine like terms: 12 + -12 = 0
0 + 2r = 30 + -12
2r = 30 + -12

Combine like terms: 30 + -12 = 18
2r = 18

Divide each side by '2'.
r = 9

Simplifying
r = 9

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