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Simplifying 9b + -7b + 4 = -2 + 2b + 9 Reorder the terms: 4 + 9b + -7b = -2 + 2b + 9 Combine like terms: 9b + -7b = 2b 4 + 2b = -2 + 2b + 9 Reorder the terms: 4 + 2b = -2 + 9 + 2b Combine like terms: -2 + 9 = 7 4 + 2b = 7 + 2b Add '-2b' to each side of the equation. 4 + 2b + -2b = 7 + 2b + -2b Combine like terms: 2b + -2b = 0 4 + 0 = 7 + 2b + -2b 4 = 7 + 2b + -2b Combine like terms: 2b + -2b = 0 4 = 7 + 0 4 = 7 Solving 4 = 7 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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