r+33=20

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Solution for r+33=20 equation: 


Simplifying
r + 33 = 20

Reorder the terms:
33 + r = 20

Solving
33 + r = 20

Solving for variable 'r'.

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

Add '-33' to each side of the equation.
33 + -33 + r = 20 + -33

Combine like terms: 33 + -33 = 0
0 + r = 20 + -33
r = 20 + -33

Combine like terms: 20 + -33 = -13
r = -13

Simplifying
r = -13

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