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Simplifying -5 + -8(-8r + -4) = 30 + 7r Reorder the terms: -5 + -8(-4 + -8r) = 30 + 7r -5 + (-4 * -8 + -8r * -8) = 30 + 7r -5 + (32 + 64r) = 30 + 7r Combine like terms: -5 + 32 = 27 27 + 64r = 30 + 7r Solving 27 + 64r = 30 + 7r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-7r' to each side of the equation. 27 + 64r + -7r = 30 + 7r + -7r Combine like terms: 64r + -7r = 57r 27 + 57r = 30 + 7r + -7r Combine like terms: 7r + -7r = 0 27 + 57r = 30 + 0 27 + 57r = 30 Add '-27' to each side of the equation. 27 + -27 + 57r = 30 + -27 Combine like terms: 27 + -27 = 0 0 + 57r = 30 + -27 57r = 30 + -27 Combine like terms: 30 + -27 = 3 57r = 3 Divide each side by '57'. r = 0.05263157895 Simplifying r = 0.05263157895
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