r-9+3=13

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Solution for r-9+3=13 equation: 


Simplifying
r + -9 + 3 = 13

Reorder the terms:
-9 + 3 + r = 13

Combine like terms: -9 + 3 = -6
-6 + r = 13

Solving
-6 + r = 13

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + r = 13 + 6

Combine like terms: -6 + 6 = 0
0 + r = 13 + 6
r = 13 + 6

Combine like terms: 13 + 6 = 19
r = 19

Simplifying
r = 19

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