-3r+7-3r-12=0

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Solution for -3r+7-3r-12=0 equation:


Simplifying
-3r + 7 + -3r + -12 = 0

Reorder the terms:
7 + -12 + -3r + -3r = 0

Combine like terms: 7 + -12 = -5
-5 + -3r + -3r = 0

Combine like terms: -3r + -3r = -6r
-5 + -6r = 0

Solving
-5 + -6r = 0

Solving for variable 'r'.

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

Add '5' to each side of the equation.
-5 + 5 + -6r = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -6r = 0 + 5
-6r = 0 + 5

Combine like terms: 0 + 5 = 5
-6r = 5

Divide each side by '-6'.
r = -0.8333333333

Simplifying
r = -0.8333333333

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