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Simplifying 21x2 + 4 = 5x2 Reorder the terms: 4 + 21x2 = 5x2 Solving 4 + 21x2 = 5x2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x2' to each side of the equation. 4 + 21x2 + -5x2 = 5x2 + -5x2 Combine like terms: 21x2 + -5x2 = 16x2 4 + 16x2 = 5x2 + -5x2 Combine like terms: 5x2 + -5x2 = 0 4 + 16x2 = 0 Add '-4' to each side of the equation. 4 + -4 + 16x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 16x2 = 0 + -4 16x2 = 0 + -4 Combine like terms: 0 + -4 = -4 16x2 = -4 Divide each side by '16'. x2 = -0.25 Simplifying x2 = -0.25 Reorder the terms: 0.25 + x2 = -0.25 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.25 + x2 = 0.00 The solution to this equation could not be determined.
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