12=-r+7r-6

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Solution for 12=-r+7r-6 equation:


Simplifying
12 = -1r + 7r + -6

Reorder the terms:
12 = -6 + -1r + 7r

Combine like terms: -1r + 7r = 6r
12 = -6 + 6r

Solving
12 = -6 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
12 + -6r = -6 + 6r + -6r

Combine like terms: 6r + -6r = 0
12 + -6r = -6 + 0
12 + -6r = -6

Add '-12' to each side of the equation.
12 + -12 + -6r = -6 + -12

Combine like terms: 12 + -12 = 0
0 + -6r = -6 + -12
-6r = -6 + -12

Combine like terms: -6 + -12 = -18
-6r = -18

Divide each side by '-6'.
r = 3

Simplifying
r = 3

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