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Simplifying -4x2 + 16 = 21 Reorder the terms: 16 + -4x2 = 21 Solving 16 + -4x2 = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + -4x2 = 21 + -16 Combine like terms: 16 + -16 = 0 0 + -4x2 = 21 + -16 -4x2 = 21 + -16 Combine like terms: 21 + -16 = 5 -4x2 = 5 Divide each side by '-4'. x2 = -1.25 Simplifying x2 = -1.25 Reorder the terms: 1.25 + x2 = -1.25 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 1.25 + x2 = 0.00 The solution to this equation could not be determined.
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