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Simplifying -20 + -3r = -4(r + 5) + 2 Reorder the terms: -20 + -3r = -4(5 + r) + 2 -20 + -3r = (5 * -4 + r * -4) + 2 -20 + -3r = (-20 + -4r) + 2 Reorder the terms: -20 + -3r = -20 + 2 + -4r Combine like terms: -20 + 2 = -18 -20 + -3r = -18 + -4r Solving -20 + -3r = -18 + -4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4r' to each side of the equation. -20 + -3r + 4r = -18 + -4r + 4r Combine like terms: -3r + 4r = 1r -20 + 1r = -18 + -4r + 4r Combine like terms: -4r + 4r = 0 -20 + 1r = -18 + 0 -20 + 1r = -18 Add '20' to each side of the equation. -20 + 20 + 1r = -18 + 20 Combine like terms: -20 + 20 = 0 0 + 1r = -18 + 20 1r = -18 + 20 Combine like terms: -18 + 20 = 2 1r = 2 Divide each side by '1'. r = 2 Simplifying r = 2
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