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Simplifying -240 = -10(-3b) Remove parenthesis around (-3b) -240 = -10 * -3b Multiply -10 * -3 -240 = 30b Solving -240 = 30b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-30b' to each side of the equation. -240 + -30b = 30b + -30b Combine like terms: 30b + -30b = 0 -240 + -30b = 0 Add '240' to each side of the equation. -240 + 240 + -30b = 0 + 240 Combine like terms: -240 + 240 = 0 0 + -30b = 0 + 240 -30b = 0 + 240 Combine like terms: 0 + 240 = 240 -30b = 240 Divide each side by '-30'. b = -8 Simplifying b = -8
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