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Simplifying -8(1 + 2b) + 7(b + -4) = -2b + -7b (1 * -8 + 2b * -8) + 7(b + -4) = -2b + -7b (-8 + -16b) + 7(b + -4) = -2b + -7b Reorder the terms: -8 + -16b + 7(-4 + b) = -2b + -7b -8 + -16b + (-4 * 7 + b * 7) = -2b + -7b -8 + -16b + (-28 + 7b) = -2b + -7b Reorder the terms: -8 + -28 + -16b + 7b = -2b + -7b Combine like terms: -8 + -28 = -36 -36 + -16b + 7b = -2b + -7b Combine like terms: -16b + 7b = -9b -36 + -9b = -2b + -7b Combine like terms: -2b + -7b = -9b -36 + -9b = -9b Add '9b' to each side of the equation. -36 + -9b + 9b = -9b + 9b Combine like terms: -9b + 9b = 0 -36 + 0 = -9b + 9b -36 = -9b + 9b Combine like terms: -9b + 9b = 0 -36 = 0 Solving -36 = 0 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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