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Simplifying -4(2b + -5) = -30 Reorder the terms: -4(-5 + 2b) = -30 (-5 * -4 + 2b * -4) = -30 (20 + -8b) = -30 Solving 20 + -8b = -30 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -8b = -30 + -20 Combine like terms: 20 + -20 = 0 0 + -8b = -30 + -20 -8b = -30 + -20 Combine like terms: -30 + -20 = -50 -8b = -50 Divide each side by '-8'. b = 6.25 Simplifying b = 6.25
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