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Simplifying 3.1b + -7 = 2.8b Reorder the terms: -7 + 3.1b = 2.8b Solving -7 + 3.1b = 2.8b Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2.8b' to each side of the equation. -7 + 3.1b + -2.8b = 2.8b + -2.8b Combine like terms: 3.1b + -2.8b = 0.3b -7 + 0.3b = 2.8b + -2.8b Combine like terms: 2.8b + -2.8b = 0.0 -7 + 0.3b = 0.0 Add '7' to each side of the equation. -7 + 7 + 0.3b = 0.0 + 7 Combine like terms: -7 + 7 = 0 0 + 0.3b = 0.0 + 7 0.3b = 0.0 + 7 Combine like terms: 0.0 + 7 = 7 0.3b = 7 Divide each side by '0.3'. b = 23.33333333 Simplifying b = 23.33333333
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