11r+7r=-6(-7r+4)-12(r-8)

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Solution for 11r+7r=-6(-7r+4)-12(r-8) equation:


Simplifying
11r + 7r = -6(-7r + 4) + -12(r + -8)

Combine like terms: 11r + 7r = 18r
18r = -6(-7r + 4) + -12(r + -8)

Reorder the terms:
18r = -6(4 + -7r) + -12(r + -8)
18r = (4 * -6 + -7r * -6) + -12(r + -8)
18r = (-24 + 42r) + -12(r + -8)

Reorder the terms:
18r = -24 + 42r + -12(-8 + r)
18r = -24 + 42r + (-8 * -12 + r * -12)
18r = -24 + 42r + (96 + -12r)

Reorder the terms:
18r = -24 + 96 + 42r + -12r

Combine like terms: -24 + 96 = 72
18r = 72 + 42r + -12r

Combine like terms: 42r + -12r = 30r
18r = 72 + 30r

Solving
18r = 72 + 30r

Solving for variable 'r'.

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

Add '-30r' to each side of the equation.
18r + -30r = 72 + 30r + -30r

Combine like terms: 18r + -30r = -12r
-12r = 72 + 30r + -30r

Combine like terms: 30r + -30r = 0
-12r = 72 + 0
-12r = 72

Divide each side by '-12'.
r = -6

Simplifying
r = -6

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