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Simplifying 4 + -1y = 1 + -1y Add 'y' to each side of the equation. 4 + -1y + y = 1 + -1y + y Combine like terms: -1y + y = 0 4 + 0 = 1 + -1y + y 4 = 1 + -1y + y Combine like terms: -1y + y = 0 4 = 1 + 0 4 = 1 Solving 4 = 1 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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