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Simplifying -1(7xy + -12) + 2(5xy + 7) = 0 Reorder the terms: -1(-12 + 7xy) + 2(5xy + 7) = 0 (-12 * -1 + 7xy * -1) + 2(5xy + 7) = 0 (12 + -7xy) + 2(5xy + 7) = 0 Reorder the terms: 12 + -7xy + 2(7 + 5xy) = 0 12 + -7xy + (7 * 2 + 5xy * 2) = 0 12 + -7xy + (14 + 10xy) = 0 Reorder the terms: 12 + 14 + -7xy + 10xy = 0 Combine like terms: 12 + 14 = 26 26 + -7xy + 10xy = 0 Combine like terms: -7xy + 10xy = 3xy 26 + 3xy = 0 Solving 26 + 3xy = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-26' to each side of the equation. 26 + -26 + 3xy = 0 + -26 Combine like terms: 26 + -26 = 0 0 + 3xy = 0 + -26 3xy = 0 + -26 Combine like terms: 0 + -26 = -26 3xy = -26 Divide each side by '3y'. x = -8.666666667y-1 Simplifying x = -8.666666667y-1
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