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Simplifying 42 = 7 + -2b Solving 42 = 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. 42 + 2b = 7 + -2b + 2b Combine like terms: -2b + 2b = 0 42 + 2b = 7 + 0 42 + 2b = 7 Add '-42' to each side of the equation. 42 + -42 + 2b = 7 + -42 Combine like terms: 42 + -42 = 0 0 + 2b = 7 + -42 2b = 7 + -42 Combine like terms: 7 + -42 = -35 2b = -35 Divide each side by '2'. b = -17.5 Simplifying b = -17.5
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