12r+4r+5r+5-2=

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Solution for 12r+4r+5r+5-2= equation:


Simplifying
12r + 4r + 5r + 5 + -2 = 0

Reorder the terms:
5 + -2 + 12r + 4r + 5r = 0

Combine like terms: 5 + -2 = 3
3 + 12r + 4r + 5r = 0

Combine like terms: 12r + 4r = 16r
3 + 16r + 5r = 0

Combine like terms: 16r + 5r = 21r
3 + 21r = 0

Solving
3 + 21r = 0

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 + 21r = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 21r = 0 + -3
21r = 0 + -3

Combine like terms: 0 + -3 = -3
21r = -3

Divide each side by '21'.
r = -0.1428571429

Simplifying
r = -0.1428571429

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