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Simplifying -4x2 + 20 = 42 Reorder the terms: 20 + -4x2 = 42 Solving 20 + -4x2 = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -4x2 = 42 + -20 Combine like terms: 20 + -20 = 0 0 + -4x2 = 42 + -20 -4x2 = 42 + -20 Combine like terms: 42 + -20 = 22 -4x2 = 22 Divide each side by '-4'. x2 = -5.5 Simplifying x2 = -5.5 Reorder the terms: 5.5 + x2 = -5.5 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 5.5 + x2 = 0.0 The solution to this equation could not be determined.
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