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Simplifying 2 + -3(7r + 5) = 0 Reorder the terms: 2 + -3(5 + 7r) = 0 2 + (5 * -3 + 7r * -3) = 0 2 + (-15 + -21r) = 0 Combine like terms: 2 + -15 = -13 -13 + -21r = 0 Solving -13 + -21r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '13' to each side of the equation. -13 + 13 + -21r = 0 + 13 Combine like terms: -13 + 13 = 0 0 + -21r = 0 + 13 -21r = 0 + 13 Combine like terms: 0 + 13 = 13 -21r = 13 Divide each side by '-21'. r = -0.619047619 Simplifying r = -0.619047619
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