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Simplifying x2 + 7y + z = 4 Solving x2 + 7y + z = 4 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. x2 + 7y + -7y + z = 4 + -7y Combine like terms: 7y + -7y = 0 x2 + 0 + z = 4 + -7y x2 + z = 4 + -7y Add '-1z' to each side of the equation. x2 + z + -1z = 4 + -7y + -1z Combine like terms: z + -1z = 0 x2 + 0 = 4 + -7y + -1z x2 = 4 + -7y + -1z Simplifying x2 = 4 + -7y + -1z Reorder the terms: -4 + x2 + 7y + z = 4 + -7y + -1z + -4 + 7y + z Reorder the terms: -4 + x2 + 7y + z = 4 + -4 + -7y + 7y + -1z + z Combine like terms: 4 + -4 = 0 -4 + x2 + 7y + z = 0 + -7y + 7y + -1z + z -4 + x2 + 7y + z = -7y + 7y + -1z + z Combine like terms: -7y + 7y = 0 -4 + x2 + 7y + z = 0 + -1z + z -4 + x2 + 7y + z = -1z + z Combine like terms: -1z + z = 0 -4 + x2 + 7y + z = 0 The solution to this equation could not be determined.
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