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Simplifying (7x2 + 4) + -1(-5y2 + 4) = 0 Reorder the terms: (4 + 7x2) + -1(-5y2 + 4) = 0 Remove parenthesis around (4 + 7x2) 4 + 7x2 + -1(-5y2 + 4) = 0 Reorder the terms: 4 + 7x2 + -1(4 + -5y2) = 0 4 + 7x2 + (4 * -1 + -5y2 * -1) = 0 4 + 7x2 + (-4 + 5y2) = 0 Reorder the terms: 4 + -4 + 7x2 + 5y2 = 0 Combine like terms: 4 + -4 = 0 0 + 7x2 + 5y2 = 0 7x2 + 5y2 = 0 Solving 7x2 + 5y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5y2' to each side of the equation. 7x2 + 5y2 + -5y2 = 0 + -5y2 Combine like terms: 5y2 + -5y2 = 0 7x2 + 0 = 0 + -5y2 7x2 = 0 + -5y2 Remove the zero: 7x2 = -5y2 Divide each side by '7'. x2 = -0.7142857143y2 Simplifying x2 = -0.7142857143y2 Combine like terms: -0.7142857143y2 + 0.7142857143y2 = 0.0000000000 x2 + 0.7142857143y2 = 0.0000000000 The solution to this equation could not be determined.
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