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Simplifying x + 2y + -1z = -7whatisx Solving x + 2y + -1z = -7ahistwx Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7ahistwx' to each side of the equation. x + 2y + 7ahistwx + -1z = -7ahistwx + 7ahistwx Reorder the terms: 7ahistwx + x + 2y + -1z = -7ahistwx + 7ahistwx Combine like terms: -7ahistwx + 7ahistwx = 0 7ahistwx + x + 2y + -1z = 0 Add '-2y' to each side of the equation. 7ahistwx + x + 2y + -2y + -1z = 0 + -2y Combine like terms: 2y + -2y = 0 7ahistwx + x + 0 + -1z = 0 + -2y 7ahistwx + x + -1z = 0 + -2y Remove the zero: 7ahistwx + x + -1z = -2y Add 'z' to each side of the equation. 7ahistwx + x + -1z + z = -2y + z Combine like terms: -1z + z = 0 7ahistwx + x + 0 = -2y + z 7ahistwx + x = -2y + z Reorder the terms: 7ahistwx + x + 2y + -1z = -2y + 2y + z + -1z Combine like terms: -2y + 2y = 0 7ahistwx + x + 2y + -1z = 0 + z + -1z 7ahistwx + x + 2y + -1z = z + -1z Combine like terms: z + -1z = 0 7ahistwx + x + 2y + -1z = 0 The solution to this equation could not be determined.
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