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Simplifying 7(b + 3) + -5b = -2(5 + -1b) Reorder the terms: 7(3 + b) + -5b = -2(5 + -1b) (3 * 7 + b * 7) + -5b = -2(5 + -1b) (21 + 7b) + -5b = -2(5 + -1b) Combine like terms: 7b + -5b = 2b 21 + 2b = -2(5 + -1b) 21 + 2b = (5 * -2 + -1b * -2) 21 + 2b = (-10 + 2b) Add '-2b' to each side of the equation. 21 + 2b + -2b = -10 + 2b + -2b Combine like terms: 2b + -2b = 0 21 + 0 = -10 + 2b + -2b 21 = -10 + 2b + -2b Combine like terms: 2b + -2b = 0 21 = -10 + 0 21 = -10 Solving 21 = -10 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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