r-15=30

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Solution for r-15=30 equation: 


Simplifying
r + -15 = 30

Reorder the terms:
-15 + r = 30

Solving
-15 + r = 30

Solving for variable 'r'.

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

Add '15' to each side of the equation.
-15 + 15 + r = 30 + 15

Combine like terms: -15 + 15 = 0
0 + r = 30 + 15
r = 30 + 15

Combine like terms: 30 + 15 = 45
r = 45

Simplifying
r = 45

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