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Simplifying 21y + -5xy + 3x = 13 Reorder the terms: 3x + -5xy + 21y = 13 Solving 3x + -5xy + 21y = 13 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21y' to each side of the equation. 3x + -5xy + 21y + -21y = 13 + -21y Combine like terms: 21y + -21y = 0 3x + -5xy + 0 = 13 + -21y 3x + -5xy = 13 + -21y Reorder the terms: -13 + 3x + -5xy + 21y = 13 + -21y + -13 + 21y Reorder the terms: -13 + 3x + -5xy + 21y = 13 + -13 + -21y + 21y Combine like terms: 13 + -13 = 0 -13 + 3x + -5xy + 21y = 0 + -21y + 21y -13 + 3x + -5xy + 21y = -21y + 21y Combine like terms: -21y + 21y = 0 -13 + 3x + -5xy + 21y = 0 The solution to this equation could not be determined.
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