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