-2(5r+9)+2(r-3)=

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Solution for -2(5r+9)+2(r-3)= equation:


Simplifying
-2(5r + 9) + 2(r + -3) = 0

Reorder the terms:
-2(9 + 5r) + 2(r + -3) = 0
(9 * -2 + 5r * -2) + 2(r + -3) = 0
(-18 + -10r) + 2(r + -3) = 0

Reorder the terms:
-18 + -10r + 2(-3 + r) = 0
-18 + -10r + (-3 * 2 + r * 2) = 0
-18 + -10r + (-6 + 2r) = 0

Reorder the terms:
-18 + -6 + -10r + 2r = 0

Combine like terms: -18 + -6 = -24
-24 + -10r + 2r = 0

Combine like terms: -10r + 2r = -8r
-24 + -8r = 0

Solving
-24 + -8r = 0

Solving for variable 'r'.

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

Add '24' to each side of the equation.
-24 + 24 + -8r = 0 + 24

Combine like terms: -24 + 24 = 0
0 + -8r = 0 + 24
-8r = 0 + 24

Combine like terms: 0 + 24 = 24
-8r = 24

Divide each side by '-8'.
r = -3

Simplifying
r = -3

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