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Simplifying 45 = 7 + -2b Solving 45 = 7 + -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. 45 + 2b = 7 + -2b + 2b Combine like terms: -2b + 2b = 0 45 + 2b = 7 + 0 45 + 2b = 7 Add '-45' to each side of the equation. 45 + -45 + 2b = 7 + -45 Combine like terms: 45 + -45 = 0 0 + 2b = 7 + -45 2b = 7 + -45 Combine like terms: 7 + -45 = -38 2b = -38 Divide each side by '2'. b = -19 Simplifying b = -19
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