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Simplifying 3xy + -21x + -1y + 7 = 0 Reorder the terms: 7 + -21x + 3xy + -1y = 0 Solving 7 + -21x + 3xy + -1y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -21x + 3xy + -7 + -1y = 0 + -7 Reorder the terms: 7 + -7 + -21x + 3xy + -1y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -21x + 3xy + -1y = 0 + -7 -21x + 3xy + -1y = 0 + -7 Combine like terms: 0 + -7 = -7 -21x + 3xy + -1y = -7 Add 'y' to each side of the equation. -21x + 3xy + -1y + y = -7 + y Combine like terms: -1y + y = 0 -21x + 3xy + 0 = -7 + y -21x + 3xy = -7 + y Reorder the terms: 7 + -21x + 3xy + -1y = -7 + y + 7 + -1y Reorder the terms: 7 + -21x + 3xy + -1y = -7 + 7 + y + -1y Combine like terms: -7 + 7 = 0 7 + -21x + 3xy + -1y = 0 + y + -1y 7 + -21x + 3xy + -1y = y + -1y Combine like terms: y + -1y = 0 7 + -21x + 3xy + -1y = 0 The solution to this equation could not be determined.
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