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Simplifying -45 = -5(-3b) Remove parenthesis around (-3b) -45 = -5 * -3b Multiply -5 * -3 -45 = 15b Solving -45 = 15b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-15b' to each side of the equation. -45 + -15b = 15b + -15b Combine like terms: 15b + -15b = 0 -45 + -15b = 0 Add '45' to each side of the equation. -45 + 45 + -15b = 0 + 45 Combine like terms: -45 + 45 = 0 0 + -15b = 0 + 45 -15b = 0 + 45 Combine like terms: 0 + 45 = 45 -15b = 45 Divide each side by '-15'. b = -3 Simplifying b = -3
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