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Simplifying 30 = -15 + 2b Solving 30 = -15 + 2b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2b' to each side of the equation. 30 + -2b = -15 + 2b + -2b Combine like terms: 2b + -2b = 0 30 + -2b = -15 + 0 30 + -2b = -15 Add '-30' to each side of the equation. 30 + -30 + -2b = -15 + -30 Combine like terms: 30 + -30 = 0 0 + -2b = -15 + -30 -2b = -15 + -30 Combine like terms: -15 + -30 = -45 -2b = -45 Divide each side by '-2'. b = 22.5 Simplifying b = 22.5
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