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Simplifying 2x2 + 7y2 = 42 Solving 2x2 + 7y2 = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7y2' to each side of the equation. 2x2 + 7y2 + -7y2 = 42 + -7y2 Combine like terms: 7y2 + -7y2 = 0 2x2 + 0 = 42 + -7y2 2x2 = 42 + -7y2 Divide each side by '2'. x2 = 21 + -3.5y2 Simplifying x2 = 21 + -3.5y2 Reorder the terms: -21 + x2 + 3.5y2 = 21 + -3.5y2 + -21 + 3.5y2 Reorder the terms: -21 + x2 + 3.5y2 = 21 + -21 + -3.5y2 + 3.5y2 Combine like terms: 21 + -21 = 0 -21 + x2 + 3.5y2 = 0 + -3.5y2 + 3.5y2 -21 + x2 + 3.5y2 = -3.5y2 + 3.5y2 Combine like terms: -3.5y2 + 3.5y2 = 0.0 -21 + x2 + 3.5y2 = 0.0 The solution to this equation could not be determined.
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