-3r+8r=12+7r+3-3

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Solution for -3r+8r=12+7r+3-3 equation:


Simplifying
-3r + 8r = 12 + 7r + 3 + -3

Combine like terms: -3r + 8r = 5r
5r = 12 + 7r + 3 + -3

Reorder the terms:
5r = 12 + 3 + -3 + 7r

Combine like terms: 12 + 3 = 15
5r = 15 + -3 + 7r

Combine like terms: 15 + -3 = 12
5r = 12 + 7r

Solving
5r = 12 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
5r + -7r = 12 + 7r + -7r

Combine like terms: 5r + -7r = -2r
-2r = 12 + 7r + -7r

Combine like terms: 7r + -7r = 0
-2r = 12 + 0
-2r = 12

Divide each side by '-2'.
r = -6

Simplifying
r = -6

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