12r+3.4=(-6r)-(-9)

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Solution for 12r+3.4=(-6r)-(-9) equation: 


Simplifying
12r + 3.4 = (-6r) + -1(-9)

Reorder the terms:
3.4 + 12r = (-6r) + -1(-9)

Multiply -1 * -9
3.4 + 12r = (-6r) + 9

Reorder the terms:
3.4 + 12r = 9 + (-6r)

Solving
3.4 + 12r = 9 + (-6r)

Solving for variable 'r'.

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

Add '(6r)' to each side of the equation.
3.4 + 12r + (6r) = 9 + (-6r) + (6r)

Combine like terms: 12r + (6r) = 18r
3.4 + 18r = 9 + (-6r) + (6r)

Combine like terms: (-6r) + (6r) = 0
3.4 + 18r = 9 + 0
3.4 + 18r = 9

Add '-3.4' to each side of the equation.
3.4 + -3.4 + 18r = 9 + -3.4

Combine like terms: 3.4 + -3.4 = 0.0
0.0 + 18r = 9 + -3.4
18r = 9 + -3.4

Combine like terms: 9 + -3.4 = 5.6
18r = 5.6

Divide each side by '18'.
r = 0.3111111111

Simplifying
r = 0.3111111111

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