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Simplifying -4r + -3(r + 3) = 8 Reorder the terms: -4r + -3(3 + r) = 8 -4r + (3 * -3 + r * -3) = 8 -4r + (-9 + -3r) = 8 Reorder the terms: -9 + -4r + -3r = 8 Combine like terms: -4r + -3r = -7r -9 + -7r = 8 Solving -9 + -7r = 8 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -7r = 8 + 9 Combine like terms: -9 + 9 = 0 0 + -7r = 8 + 9 -7r = 8 + 9 Combine like terms: 8 + 9 = 17 -7r = 17 Divide each side by '-7'. r = -2.428571429 Simplifying r = -2.428571429
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