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Simplifying -86 = -3(b + 2) + -7b Reorder the terms: -86 = -3(2 + b) + -7b -86 = (2 * -3 + b * -3) + -7b -86 = (-6 + -3b) + -7b Combine like terms: -3b + -7b = -10b -86 = -6 + -10b Solving -86 = -6 + -10b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '10b' to each side of the equation. -86 + 10b = -6 + -10b + 10b Combine like terms: -10b + 10b = 0 -86 + 10b = -6 + 0 -86 + 10b = -6 Add '86' to each side of the equation. -86 + 86 + 10b = -6 + 86 Combine like terms: -86 + 86 = 0 0 + 10b = -6 + 86 10b = -6 + 86 Combine like terms: -6 + 86 = 80 10b = 80 Divide each side by '10'. b = 8 Simplifying b = 8
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