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Simplifying 4x + 8y + 4z = -7 Solving 4x + 8y + 4z = -7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8y' to each side of the equation. 4x + 8y + -8y + 4z = -7 + -8y Combine like terms: 8y + -8y = 0 4x + 0 + 4z = -7 + -8y 4x + 4z = -7 + -8y Add '-4z' to each side of the equation. 4x + 4z + -4z = -7 + -8y + -4z Combine like terms: 4z + -4z = 0 4x + 0 = -7 + -8y + -4z 4x = -7 + -8y + -4z Divide each side by '4'. x = -1.75 + -2y + -1z Simplifying x = -1.75 + -2y + -1z
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