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Simplifying 4b + -7 = 13 + 4b Reorder the terms: -7 + 4b = 13 + 4b Add '-4b' to each side of the equation. -7 + 4b + -4b = 13 + 4b + -4b Combine like terms: 4b + -4b = 0 -7 + 0 = 13 + 4b + -4b -7 = 13 + 4b + -4b Combine like terms: 4b + -4b = 0 -7 = 13 + 0 -7 = 13 Solving -7 = 13 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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