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 = 15
r = 15

Simplifying
r = 15

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