7r-6+r=18

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Solution for 7r-6+r=18 equation: 


Simplifying
7r + -6 + r = 18

Reorder the terms:
-6 + 7r + r = 18

Combine like terms: 7r + r = 8r
-6 + 8r = 18

Solving
-6 + 8r = 18

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + 8r = 18 + 6

Combine like terms: -6 + 6 = 0
0 + 8r = 18 + 6
8r = 18 + 6

Combine like terms: 18 + 6 = 24
8r = 24

Divide each side by '8'.
r = 3

Simplifying
r = 3

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