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Simplifying 2x + 7y + 4z = -23 Solving 2x + 7y + 4z = -23 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7y' to each side of the equation. 2x + 7y + -7y + 4z = -23 + -7y Combine like terms: 7y + -7y = 0 2x + 0 + 4z = -23 + -7y 2x + 4z = -23 + -7y Add '-4z' to each side of the equation. 2x + 4z + -4z = -23 + -7y + -4z Combine like terms: 4z + -4z = 0 2x + 0 = -23 + -7y + -4z 2x = -23 + -7y + -4z Divide each side by '2'. x = -11.5 + -3.5y + -2z Simplifying x = -11.5 + -3.5y + -2z
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