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Simplifying 7(y + 4) = 7y + 15 Reorder the terms: 7(4 + y) = 7y + 15 (4 * 7 + y * 7) = 7y + 15 (28 + 7y) = 7y + 15 Reorder the terms: 28 + 7y = 15 + 7y Add '-7y' to each side of the equation. 28 + 7y + -7y = 15 + 7y + -7y Combine like terms: 7y + -7y = 0 28 + 0 = 15 + 7y + -7y 28 = 15 + 7y + -7y Combine like terms: 7y + -7y = 0 28 = 15 + 0 28 = 15 Solving 28 = 15 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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