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Simplifying 1.5b + (2b + -90) + 90 + b + b + 45 = 540 Reorder the terms: 1.5b + (-90 + 2b) + 90 + b + b + 45 = 540 Remove parenthesis around (-90 + 2b) 1.5b + -90 + 2b + 90 + b + b + 45 = 540 Reorder the terms: -90 + 90 + 45 + 1.5b + 2b + b + b = 540 Combine like terms: -90 + 90 = 0 0 + 45 + 1.5b + 2b + b + b = 540 45 + 1.5b + 2b + b + b = 540 Combine like terms: 1.5b + 2b = 3.5b 45 + 3.5b + b + b = 540 Combine like terms: 3.5b + b = 4.5b 45 + 4.5b + b = 540 Combine like terms: 4.5b + b = 5.5b 45 + 5.5b = 540 Solving 45 + 5.5b = 540 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5.5b = 540 + -45 Combine like terms: 45 + -45 = 0 0 + 5.5b = 540 + -45 5.5b = 540 + -45 Combine like terms: 540 + -45 = 495 5.5b = 495 Divide each side by '5.5'. b = 90 Simplifying b = 90
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