12r+3+r=7-12

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


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

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

Combine like terms: 12r + r = 13r
3 + 13r = 7 + -12

Combine like terms: 7 + -12 = -5
3 + 13r = -5

Solving
3 + 13r = -5

Solving for variable 'r'.

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

Add '-3' to each side of the equation.
3 + -3 + 13r = -5 + -3

Combine like terms: 3 + -3 = 0
0 + 13r = -5 + -3
13r = -5 + -3

Combine like terms: -5 + -3 = -8
13r = -8

Divide each side by '13'.
r = -0.6153846154

Simplifying
r = -0.6153846154

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