-10r-(12r+9)=

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Solution for -10r-(12r+9)= equation:


Simplifying
-10r + -1(12r + 9) = 0

Reorder the terms:
-10r + -1(9 + 12r) = 0
-10r + (9 * -1 + 12r * -1) = 0
-10r + (-9 + -12r) = 0

Reorder the terms:
-9 + -10r + -12r = 0

Combine like terms: -10r + -12r = -22r
-9 + -22r = 0

Solving
-9 + -22r = 0

Solving for variable 'r'.

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

Add '9' to each side of the equation.
-9 + 9 + -22r = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -22r = 0 + 9
-22r = 0 + 9

Combine like terms: 0 + 9 = 9
-22r = 9

Divide each side by '-22'.
r = -0.4090909091

Simplifying
r = -0.4090909091

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