r+12+r=100

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Solution for r+12+r=100 equation:


Simplifying
r + 12 + r = 100

Reorder the terms:
12 + r + r = 100

Combine like terms: r + r = 2r
12 + 2r = 100

Solving
12 + 2r = 100

Solving for variable 'r'.

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

Add '-12' to each side of the equation.
12 + -12 + 2r = 100 + -12

Combine like terms: 12 + -12 = 0
0 + 2r = 100 + -12
2r = 100 + -12

Combine like terms: 100 + -12 = 88
2r = 88

Divide each side by '2'.
r = 44

Simplifying
r = 44

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