r+12=23

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Solution for r+12=23 equation: 


Simplifying
r + 12 = 23

Reorder the terms:
12 + r = 23

Solving
12 + r = 23

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 + r = 23 + -12

Combine like terms: 12 + -12 = 0
0 + r = 23 + -12
r = 23 + -12

Combine like terms: 23 + -12 = 11
r = 11

Simplifying
r = 11

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