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Simplifying xy + -15y + 6x + -90 = 390 Reorder the terms: -90 + 6x + xy + -15y = 390 Solving -90 + 6x + xy + -15y = 390 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '90' to each side of the equation. -90 + 6x + xy + 90 + -15y = 390 + 90 Reorder the terms: -90 + 90 + 6x + xy + -15y = 390 + 90 Combine like terms: -90 + 90 = 0 0 + 6x + xy + -15y = 390 + 90 6x + xy + -15y = 390 + 90 Combine like terms: 390 + 90 = 480 6x + xy + -15y = 480 Add '15y' to each side of the equation. 6x + xy + -15y + 15y = 480 + 15y Combine like terms: -15y + 15y = 0 6x + xy + 0 = 480 + 15y 6x + xy = 480 + 15y Reorder the terms: -480 + 6x + xy + -15y = 480 + 15y + -480 + -15y Reorder the terms: -480 + 6x + xy + -15y = 480 + -480 + 15y + -15y Combine like terms: 480 + -480 = 0 -480 + 6x + xy + -15y = 0 + 15y + -15y -480 + 6x + xy + -15y = 15y + -15y Combine like terms: 15y + -15y = 0 -480 + 6x + xy + -15y = 0 The solution to this equation could not be determined.
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