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Simplifying 2x + 4y = 42 Solving 2x + 4y = 42 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. 2x + 4y + -4y = 42 + -4y Combine like terms: 4y + -4y = 0 2x + 0 = 42 + -4y 2x = 42 + -4y Divide each side by '2'. x = 21 + -2y Simplifying x = 21 + -2y
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