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Simplifying 0 = -1x2 + -4y + 21 Reorder the terms: 0 = 21 + -1x2 + -4y Solving 0 = 21 + -1x2 + -4y Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add 'x2' to each side of the equation. 0 + x2 = 21 + -1x2 + x2 + -4y Remove the zero: x2 = 21 + -1x2 + x2 + -4y Combine like terms: -1x2 + x2 = 0 x2 = 21 + 0 + -4y x2 = 21 + -4y Simplifying x2 = 21 + -4y Reorder the terms: -21 + x2 + 4y = 21 + -4y + -21 + 4y Reorder the terms: -21 + x2 + 4y = 21 + -21 + -4y + 4y Combine like terms: 21 + -21 = 0 -21 + x2 + 4y = 0 + -4y + 4y -21 + x2 + 4y = -4y + 4y Combine like terms: -4y + 4y = 0 -21 + x2 + 4y = 0 The solution to this equation could not be determined.
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