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Simplifying 7x + 4y = 20 Solving 7x + 4y = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4y' to each side of the equation. 7x + 4y + -4y = 20 + -4y Combine like terms: 4y + -4y = 0 7x + 0 = 20 + -4y 7x = 20 + -4y Divide each side by '7'. x = 2.857142857 + -0.5714285714y Simplifying x = 2.857142857 + -0.5714285714y
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