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Simplifying 6 + -2x2 = 21 Solving 6 + -2x2 = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -2x2 = 21 + -6 Combine like terms: 6 + -6 = 0 0 + -2x2 = 21 + -6 -2x2 = 21 + -6 Combine like terms: 21 + -6 = 15 -2x2 = 15 Divide each side by '-2'. x2 = -7.5 Simplifying x2 = -7.5 Reorder the terms: 7.5 + x2 = -7.5 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 7.5 + x2 = 0.0 The solution to this equation could not be determined.
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