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Simplifying -112 = -4(4r + -4) Reorder the terms: -112 = -4(-4 + 4r) -112 = (-4 * -4 + 4r * -4) -112 = (16 + -16r) Solving -112 = 16 + -16r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '16r' to each side of the equation. -112 + 16r = 16 + -16r + 16r Combine like terms: -16r + 16r = 0 -112 + 16r = 16 + 0 -112 + 16r = 16 Add '112' to each side of the equation. -112 + 112 + 16r = 16 + 112 Combine like terms: -112 + 112 = 0 0 + 16r = 16 + 112 16r = 16 + 112 Combine like terms: 16 + 112 = 128 16r = 128 Divide each side by '16'. r = 8 Simplifying r = 8
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