5+3(2r-5)-3(4r+5)-9=

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Solution for 5+3(2r-5)-3(4r+5)-9= equation:


Simplifying
5 + 3(2r + -5) + -3(4r + 5) + -9 = 0

Reorder the terms:
5 + 3(-5 + 2r) + -3(4r + 5) + -9 = 0
5 + (-5 * 3 + 2r * 3) + -3(4r + 5) + -9 = 0
5 + (-15 + 6r) + -3(4r + 5) + -9 = 0

Reorder the terms:
5 + -15 + 6r + -3(5 + 4r) + -9 = 0
5 + -15 + 6r + (5 * -3 + 4r * -3) + -9 = 0
5 + -15 + 6r + (-15 + -12r) + -9 = 0

Reorder the terms:
5 + -15 + -15 + -9 + 6r + -12r = 0

Combine like terms: 5 + -15 = -10
-10 + -15 + -9 + 6r + -12r = 0

Combine like terms: -10 + -15 = -25
-25 + -9 + 6r + -12r = 0

Combine like terms: -25 + -9 = -34
-34 + 6r + -12r = 0

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

Solving
-34 + -6r = 0

Solving for variable 'r'.

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

Add '34' to each side of the equation.
-34 + 34 + -6r = 0 + 34

Combine like terms: -34 + 34 = 0
0 + -6r = 0 + 34
-6r = 0 + 34

Combine like terms: 0 + 34 = 34
-6r = 34

Divide each side by '-6'.
r = -5.666666667

Simplifying
r = -5.666666667

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