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Simplifying 9b + -15 = 5(b + 1) + 4b Reorder the terms: -15 + 9b = 5(b + 1) + 4b Reorder the terms: -15 + 9b = 5(1 + b) + 4b -15 + 9b = (1 * 5 + b * 5) + 4b -15 + 9b = (5 + 5b) + 4b Combine like terms: 5b + 4b = 9b -15 + 9b = 5 + 9b Add '-9b' to each side of the equation. -15 + 9b + -9b = 5 + 9b + -9b Combine like terms: 9b + -9b = 0 -15 + 0 = 5 + 9b + -9b -15 = 5 + 9b + -9b Combine like terms: 9b + -9b = 0 -15 = 5 + 0 -15 = 5 Solving -15 = 5 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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