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Simplifying 7x + -4y + -9 = 4 Reorder the terms: -9 + 7x + -4y = 4 Solving -9 + 7x + -4y = 4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 7x + 9 + -4y = 4 + 9 Reorder the terms: -9 + 9 + 7x + -4y = 4 + 9 Combine like terms: -9 + 9 = 0 0 + 7x + -4y = 4 + 9 7x + -4y = 4 + 9 Combine like terms: 4 + 9 = 13 7x + -4y = 13 Add '4y' to each side of the equation. 7x + -4y + 4y = 13 + 4y Combine like terms: -4y + 4y = 0 7x + 0 = 13 + 4y 7x = 13 + 4y Divide each side by '7'. x = 1.857142857 + 0.5714285714y Simplifying x = 1.857142857 + 0.5714285714y
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