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Simplifying 4 + 2x + 7y = 12 Solving 4 + 2x + 7y = 12 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 2x + -4 + 7y = 12 + -4 Reorder the terms: 4 + -4 + 2x + 7y = 12 + -4 Combine like terms: 4 + -4 = 0 0 + 2x + 7y = 12 + -4 2x + 7y = 12 + -4 Combine like terms: 12 + -4 = 8 2x + 7y = 8 Add '-7y' to each side of the equation. 2x + 7y + -7y = 8 + -7y Combine like terms: 7y + -7y = 0 2x + 0 = 8 + -7y 2x = 8 + -7y Divide each side by '2'. x = 4 + -3.5y Simplifying x = 4 + -3.5y
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