2+r+10=13

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Solution for 2+r+10=13 equation: 


Simplifying
2 + r + 10 = 13

Reorder the terms:
2 + 10 + r = 13

Combine like terms: 2 + 10 = 12
12 + r = 13

Solving
12 + r = 13

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 = 13 + -12

Combine like terms: 12 + -12 = 0
0 + r = 13 + -12
r = 13 + -12

Combine like terms: 13 + -12 = 1
r = 1

Simplifying
r = 1

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