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Simplifying -3(r + 4) = -50 Reorder the terms: -3(4 + r) = -50 (4 * -3 + r * -3) = -50 (-12 + -3r) = -50 Solving -12 + -3r = -50 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + -3r = -50 + 12 Combine like terms: -12 + 12 = 0 0 + -3r = -50 + 12 -3r = -50 + 12 Combine like terms: -50 + 12 = -38 -3r = -38 Divide each side by '-3'. r = 12.66666667 Simplifying r = 12.66666667
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