r+r-12=98

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Solution for r+r-12=98 equation: 


Simplifying
r + r + -12 = 98

Reorder the terms:
-12 + r + r = 98

Combine like terms: r + r = 2r
-12 + 2r = 98

Solving
-12 + 2r = 98

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 = 98 + 12

Combine like terms: -12 + 12 = 0
0 + 2r = 98 + 12
2r = 98 + 12

Combine like terms: 98 + 12 = 110
2r = 110

Divide each side by '2'.
r = 55

Simplifying
r = 55

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