5+3(2r-8)-3(4r+5)-8=

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Solution for 5+3(2r-8)-3(4r+5)-8= equation:


Simplifying
5 + 3(2r + -8) + -3(4r + 5) + -8 = 0

Reorder the terms:
5 + 3(-8 + 2r) + -3(4r + 5) + -8 = 0
5 + (-8 * 3 + 2r * 3) + -3(4r + 5) + -8 = 0
5 + (-24 + 6r) + -3(4r + 5) + -8 = 0

Reorder the terms:
5 + -24 + 6r + -3(5 + 4r) + -8 = 0
5 + -24 + 6r + (5 * -3 + 4r * -3) + -8 = 0
5 + -24 + 6r + (-15 + -12r) + -8 = 0

Reorder the terms:
5 + -24 + -15 + -8 + 6r + -12r = 0

Combine like terms: 5 + -24 = -19
-19 + -15 + -8 + 6r + -12r = 0

Combine like terms: -19 + -15 = -34
-34 + -8 + 6r + -12r = 0

Combine like terms: -34 + -8 = -42
-42 + 6r + -12r = 0

Combine like terms: 6r + -12r = -6r
-42 + -6r = 0

Solving
-42 + -6r = 0

Solving for variable 'r'.

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

Add '42' to each side of the equation.
-42 + 42 + -6r = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -6r = 0 + 42
-6r = 0 + 42

Combine like terms: 0 + 42 = 42
-6r = 42

Divide each side by '-6'.
r = -7

Simplifying
r = -7

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