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Simplifying 4(3b + -5) = -31 + 12b Reorder the terms: 4(-5 + 3b) = -31 + 12b (-5 * 4 + 3b * 4) = -31 + 12b (-20 + 12b) = -31 + 12b Add '-12b' to each side of the equation. -20 + 12b + -12b = -31 + 12b + -12b Combine like terms: 12b + -12b = 0 -20 + 0 = -31 + 12b + -12b -20 = -31 + 12b + -12b Combine like terms: 12b + -12b = 0 -20 = -31 + 0 -20 = -31 Solving -20 = -31 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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