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Simplifying 4(r + 5) + -27 = 0 Reorder the terms: 4(5 + r) + -27 = 0 (5 * 4 + r * 4) + -27 = 0 (20 + 4r) + -27 = 0 Reorder the terms: 20 + -27 + 4r = 0 Combine like terms: 20 + -27 = -7 -7 + 4r = 0 Solving -7 + 4r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 4r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 4r = 0 + 7 4r = 0 + 7 Combine like terms: 0 + 7 = 7 4r = 7 Divide each side by '4'. r = 1.75 Simplifying r = 1.75
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