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Simplifying 4 + 7x = 7(x + 7) Reorder the terms: 4 + 7x = 7(7 + x) 4 + 7x = (7 * 7 + x * 7) 4 + 7x = (49 + 7x) Add '-7x' to each side of the equation. 4 + 7x + -7x = 49 + 7x + -7x Combine like terms: 7x + -7x = 0 4 + 0 = 49 + 7x + -7x 4 = 49 + 7x + -7x Combine like terms: 7x + -7x = 0 4 = 49 + 0 4 = 49 Solving 4 = 49 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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