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Simplifying 9x2 + 7y2 = 4 Solving 9x2 + 7y2 = 4 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. 9x2 + 7y2 + -7y2 = 4 + -7y2 Combine like terms: 7y2 + -7y2 = 0 9x2 + 0 = 4 + -7y2 9x2 = 4 + -7y2 Divide each side by '9'. x2 = 0.4444444444 + -0.7777777778y2 Simplifying x2 = 0.4444444444 + -0.7777777778y2 Reorder the terms: -0.4444444444 + x2 + 0.7777777778y2 = 0.4444444444 + -0.7777777778y2 + -0.4444444444 + 0.7777777778y2 Reorder the terms: -0.4444444444 + x2 + 0.7777777778y2 = 0.4444444444 + -0.4444444444 + -0.7777777778y2 + 0.7777777778y2 Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000 -0.4444444444 + x2 + 0.7777777778y2 = 0.0000000000 + -0.7777777778y2 + 0.7777777778y2 -0.4444444444 + x2 + 0.7777777778y2 = -0.7777777778y2 + 0.7777777778y2 Combine like terms: -0.7777777778y2 + 0.7777777778y2 = 0.0000000000 -0.4444444444 + x2 + 0.7777777778y2 = 0.0000000000 The solution to this equation could not be determined.
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