r+1=12

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Solution for r+1=12 equation: 


Simplifying
r + 1 = 12

Reorder the terms:
1 + r = 12

Solving
1 + r = 12

Solving for variable 'r'.

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

Add '-1' to each side of the equation.
1 + -1 + r = 12 + -1

Combine like terms: 1 + -1 = 0
0 + r = 12 + -1
r = 12 + -1

Combine like terms: 12 + -1 = 11
r = 11

Simplifying
r = 11

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