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Simplifying 3y + 4x = 90 Reorder the terms: 4x + 3y = 90 Solving 4x + 3y = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3y' to each side of the equation. 4x + 3y + -3y = 90 + -3y Combine like terms: 3y + -3y = 0 4x + 0 = 90 + -3y 4x = 90 + -3y Divide each side by '4'. x = 22.5 + -0.75y Simplifying x = 22.5 + -0.75y
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