r+r+18=100

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Solution for r+r+18=100 equation:


Simplifying
r + r + 18 = 100

Reorder the terms:
18 + r + r = 100

Combine like terms: r + r = 2r
18 + 2r = 100

Solving
18 + 2r = 100

Solving for variable 'r'.

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

Add '-18' to each side of the equation.
18 + -18 + 2r = 100 + -18

Combine like terms: 18 + -18 = 0
0 + 2r = 100 + -18
2r = 100 + -18

Combine like terms: 100 + -18 = 82
2r = 82

Divide each side by '2'.
r = 41

Simplifying
r = 41

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