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Simplifying 7(x + 4) = (7x + 23) Reorder the terms: 7(4 + x) = (7x + 23) (4 * 7 + x * 7) = (7x + 23) (28 + 7x) = (7x + 23) Reorder the terms: 28 + 7x = (23 + 7x) Remove parenthesis around (23 + 7x) 28 + 7x = 23 + 7x Add '-7x' to each side of the equation. 28 + 7x + -7x = 23 + 7x + -7x Combine like terms: 7x + -7x = 0 28 + 0 = 23 + 7x + -7x 28 = 23 + 7x + -7x Combine like terms: 7x + -7x = 0 28 = 23 + 0 28 = 23 Solving 28 = 23 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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