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Simplifying 7x + 2y + 40 = 90 Reorder the terms: 40 + 7x + 2y = 90 Solving 40 + 7x + 2y = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-40' to each side of the equation. 40 + 7x + -40 + 2y = 90 + -40 Reorder the terms: 40 + -40 + 7x + 2y = 90 + -40 Combine like terms: 40 + -40 = 0 0 + 7x + 2y = 90 + -40 7x + 2y = 90 + -40 Combine like terms: 90 + -40 = 50 7x + 2y = 50 Add '-2y' to each side of the equation. 7x + 2y + -2y = 50 + -2y Combine like terms: 2y + -2y = 0 7x + 0 = 50 + -2y 7x = 50 + -2y Divide each side by '7'. x = 7.142857143 + -0.2857142857y Simplifying x = 7.142857143 + -0.2857142857y
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