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Simplifying 4(1 + -2b) + -8(-1b + 3) = 4 (1 * 4 + -2b * 4) + -8(-1b + 3) = 4 (4 + -8b) + -8(-1b + 3) = 4 Reorder the terms: 4 + -8b + -8(3 + -1b) = 4 4 + -8b + (3 * -8 + -1b * -8) = 4 4 + -8b + (-24 + 8b) = 4 Reorder the terms: 4 + -24 + -8b + 8b = 4 Combine like terms: 4 + -24 = -20 -20 + -8b + 8b = 4 Combine like terms: -8b + 8b = 0 -20 + 0 = 4 -20 = 4 Solving -20 = 4 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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