7+3(2r-2)-3(4r+5)-8=

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Solution for 7+3(2r-2)-3(4r+5)-8= equation:


Simplifying
7 + 3(2r + -2) + -3(4r + 5) + -8 = 0

Reorder the terms:
7 + 3(-2 + 2r) + -3(4r + 5) + -8 = 0
7 + (-2 * 3 + 2r * 3) + -3(4r + 5) + -8 = 0
7 + (-6 + 6r) + -3(4r + 5) + -8 = 0

Reorder the terms:
7 + -6 + 6r + -3(5 + 4r) + -8 = 0
7 + -6 + 6r + (5 * -3 + 4r * -3) + -8 = 0
7 + -6 + 6r + (-15 + -12r) + -8 = 0

Reorder the terms:
7 + -6 + -15 + -8 + 6r + -12r = 0

Combine like terms: 7 + -6 = 1
1 + -15 + -8 + 6r + -12r = 0

Combine like terms: 1 + -15 = -14
-14 + -8 + 6r + -12r = 0

Combine like terms: -14 + -8 = -22
-22 + 6r + -12r = 0

Combine like terms: 6r + -12r = -6r
-22 + -6r = 0

Solving
-22 + -6r = 0

Solving for variable 'r'.

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

Add '22' to each side of the equation.
-22 + 22 + -6r = 0 + 22

Combine like terms: -22 + 22 = 0
0 + -6r = 0 + 22
-6r = 0 + 22

Combine like terms: 0 + 22 = 22
-6r = 22

Divide each side by '-6'.
r = -3.666666667

Simplifying
r = -3.666666667

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