r+30=50

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Solution for r+30=50 equation: 


Simplifying
r + 30 = 50

Reorder the terms:
30 + r = 50

Solving
30 + r = 50

Solving for variable 'r'.

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

Add '-30' to each side of the equation.
30 + -30 + r = 50 + -30

Combine like terms: 30 + -30 = 0
0 + r = 50 + -30
r = 50 + -30

Combine like terms: 50 + -30 = 20
r = 20

Simplifying
r = 20

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