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Simplifying 4 + -1(2xy + -7) + 8(xy + 1) = 0 Reorder the terms: 4 + -1(-7 + 2xy) + 8(xy + 1) = 0 4 + (-7 * -1 + 2xy * -1) + 8(xy + 1) = 0 4 + (7 + -2xy) + 8(xy + 1) = 0 Reorder the terms: 4 + 7 + -2xy + 8(1 + xy) = 0 4 + 7 + -2xy + (1 * 8 + xy * 8) = 0 4 + 7 + -2xy + (8 + 8xy) = 0 Reorder the terms: 4 + 7 + 8 + -2xy + 8xy = 0 Combine like terms: 4 + 7 = 11 11 + 8 + -2xy + 8xy = 0 Combine like terms: 11 + 8 = 19 19 + -2xy + 8xy = 0 Combine like terms: -2xy + 8xy = 6xy 19 + 6xy = 0 Solving 19 + 6xy = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-19' to each side of the equation. 19 + -19 + 6xy = 0 + -19 Combine like terms: 19 + -19 = 0 0 + 6xy = 0 + -19 6xy = 0 + -19 Combine like terms: 0 + -19 = -19 6xy = -19 Divide each side by '6y'. x = -3.166666667y-1 Simplifying x = -3.166666667y-1
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