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Simplifying -7x + -8y = -20 Solving -7x + -8y = -20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8y' to each side of the equation. -7x + -8y + 8y = -20 + 8y Combine like terms: -8y + 8y = 0 -7x + 0 = -20 + 8y -7x = -20 + 8y Divide each side by '-7'. x = 2.857142857 + -1.142857143y Simplifying x = 2.857142857 + -1.142857143y
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