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Simplifying 40 + 7.5b = 12.5b Solving 40 + 7.5b = 12.5b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-12.5b' to each side of the equation. 40 + 7.5b + -12.5b = 12.5b + -12.5b Combine like terms: 7.5b + -12.5b = -5b 40 + -5b = 12.5b + -12.5b Combine like terms: 12.5b + -12.5b = 0.0 40 + -5b = 0.0 Add '-40' to each side of the equation. 40 + -40 + -5b = 0.0 + -40 Combine like terms: 40 + -40 = 0 0 + -5b = 0.0 + -40 -5b = 0.0 + -40 Combine like terms: 0.0 + -40 = -40 -5b = -40 Divide each side by '-5'. b = 8 Simplifying b = 8
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