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Simplifying 30 + -15b = 24 + 21b Solving 30 + -15b = 24 + 21b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-21b' to each side of the equation. 30 + -15b + -21b = 24 + 21b + -21b Combine like terms: -15b + -21b = -36b 30 + -36b = 24 + 21b + -21b Combine like terms: 21b + -21b = 0 30 + -36b = 24 + 0 30 + -36b = 24 Add '-30' to each side of the equation. 30 + -30 + -36b = 24 + -30 Combine like terms: 30 + -30 = 0 0 + -36b = 24 + -30 -36b = 24 + -30 Combine like terms: 24 + -30 = -6 -36b = -6 Divide each side by '-36'. b = 0.1666666667 Simplifying b = 0.1666666667
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