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Simplifying (2x + -5y + -7) + -1(8x + -5y + -8) = 0 Reorder the terms: (-7 + 2x + -5y) + -1(8x + -5y + -8) = 0 Remove parenthesis around (-7 + 2x + -5y) -7 + 2x + -5y + -1(8x + -5y + -8) = 0 Reorder the terms: -7 + 2x + -5y + -1(-8 + 8x + -5y) = 0 -7 + 2x + -5y + (-8 * -1 + 8x * -1 + -5y * -1) = 0 -7 + 2x + -5y + (8 + -8x + 5y) = 0 Reorder the terms: -7 + 8 + 2x + -8x + -5y + 5y = 0 Combine like terms: -7 + 8 = 1 1 + 2x + -8x + -5y + 5y = 0 Combine like terms: 2x + -8x = -6x 1 + -6x + -5y + 5y = 0 Combine like terms: -5y + 5y = 0 1 + -6x + 0 = 0 1 + -6x = 0 Solving 1 + -6x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -6x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -6x = 0 + -1 -6x = 0 + -1 Combine like terms: 0 + -1 = -1 -6x = -1 Divide each side by '-6'. x = 0.1666666667 Simplifying x = 0.1666666667
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