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Simplifying 87 = -3(1 + -6b) 87 = (1 * -3 + -6b * -3) 87 = (-3 + 18b) Solving 87 = -3 + 18b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-18b' to each side of the equation. 87 + -18b = -3 + 18b + -18b Combine like terms: 18b + -18b = 0 87 + -18b = -3 + 0 87 + -18b = -3 Add '-87' to each side of the equation. 87 + -87 + -18b = -3 + -87 Combine like terms: 87 + -87 = 0 0 + -18b = -3 + -87 -18b = -3 + -87 Combine like terms: -3 + -87 = -90 -18b = -90 Divide each side by '-18'. b = 5 Simplifying b = 5
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