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

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


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

Reorder the terms:
3 + 3(-4 + 2r) + -3(4r + 4) + -7 = 0
3 + (-4 * 3 + 2r * 3) + -3(4r + 4) + -7 = 0
3 + (-12 + 6r) + -3(4r + 4) + -7 = 0

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

Reorder the terms:
3 + -12 + -12 + -7 + 6r + -12r = 0

Combine like terms: 3 + -12 = -9
-9 + -12 + -7 + 6r + -12r = 0

Combine like terms: -9 + -12 = -21
-21 + -7 + 6r + -12r = 0

Combine like terms: -21 + -7 = -28
-28 + 6r + -12r = 0

Combine like terms: 6r + -12r = -6r
-28 + -6r = 0

Solving
-28 + -6r = 0

Solving for variable 'r'.

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

Add '28' to each side of the equation.
-28 + 28 + -6r = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -6r = 0 + 28
-6r = 0 + 28

Combine like terms: 0 + 28 = 28
-6r = 28

Divide each side by '-6'.
r = -4.666666667

Simplifying
r = -4.666666667

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