3r+9r+4r-2=

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Solution for 3r+9r+4r-2= equation:


Simplifying
3r + 9r + 4r + -2 = 0

Reorder the terms:
-2 + 3r + 9r + 4r = 0

Combine like terms: 3r + 9r = 12r
-2 + 12r + 4r = 0

Combine like terms: 12r + 4r = 16r
-2 + 16r = 0

Solving
-2 + 16r = 0

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 16r = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 16r = 0 + 2
16r = 0 + 2

Combine like terms: 0 + 2 = 2
16r = 2

Divide each side by '16'.
r = 0.125

Simplifying
r = 0.125

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