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

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


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

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

Reorder the terms:
4 + -6 + 6r + -3(7 + 4r) + -7 = 0
4 + -6 + 6r + (7 * -3 + 4r * -3) + -7 = 0
4 + -6 + 6r + (-21 + -12r) + -7 = 0

Reorder the terms:
4 + -6 + -21 + -7 + 6r + -12r = 0

Combine like terms: 4 + -6 = -2
-2 + -21 + -7 + 6r + -12r = 0

Combine like terms: -2 + -21 = -23
-23 + -7 + 6r + -12r = 0

Combine like terms: -23 + -7 = -30
-30 + 6r + -12r = 0

Combine like terms: 6r + -12r = -6r
-30 + -6r = 0

Solving
-30 + -6r = 0

Solving for variable 'r'.

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

Add '30' to each side of the equation.
-30 + 30 + -6r = 0 + 30

Combine like terms: -30 + 30 = 0
0 + -6r = 0 + 30
-6r = 0 + 30

Combine like terms: 0 + 30 = 30
-6r = 30

Divide each side by '-6'.
r = -5

Simplifying
r = -5

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