30+2r=70

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Solution for 30+2r=70 equation: 


Simplifying
30 + 2r = 70

Solving
30 + 2r = 70

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 + 2r = 70 + -30

Combine like terms: 30 + -30 = 0
0 + 2r = 70 + -30
2r = 70 + -30

Combine like terms: 70 + -30 = 40
2r = 40

Divide each side by '2'.
r = 20

Simplifying
r = 20

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