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Simplifying 2 + 2(b + -2) = 40 Reorder the terms: 2 + 2(-2 + b) = 40 2 + (-2 * 2 + b * 2) = 40 2 + (-4 + 2b) = 40 Combine like terms: 2 + -4 = -2 -2 + 2b = 40 Solving -2 + 2b = 40 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + 2b = 40 + 2 Combine like terms: -2 + 2 = 0 0 + 2b = 40 + 2 2b = 40 + 2 Combine like terms: 40 + 2 = 42 2b = 42 Divide each side by '2'. b = 21 Simplifying b = 21
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