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Simplifying 4(x2 + -1) + -7y = 9 Reorder the terms: 4(-1 + x2) + -7y = 9 (-1 * 4 + x2 * 4) + -7y = 9 (-4 + 4x2) + -7y = 9 Solving -4 + 4x2 + -7y = 9 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4x2 + 4 + -7y = 9 + 4 Reorder the terms: -4 + 4 + 4x2 + -7y = 9 + 4 Combine like terms: -4 + 4 = 0 0 + 4x2 + -7y = 9 + 4 4x2 + -7y = 9 + 4 Combine like terms: 9 + 4 = 13 4x2 + -7y = 13 Add '7y' to each side of the equation. 4x2 + -7y + 7y = 13 + 7y Combine like terms: -7y + 7y = 0 4x2 + 0 = 13 + 7y 4x2 = 13 + 7y Divide each side by '4'. x2 = 3.25 + 1.75y Simplifying x2 = 3.25 + 1.75y Reorder the terms: -3.25 + x2 + -1.75y = 3.25 + 1.75y + -3.25 + -1.75y Reorder the terms: -3.25 + x2 + -1.75y = 3.25 + -3.25 + 1.75y + -1.75y Combine like terms: 3.25 + -3.25 = 0.00 -3.25 + x2 + -1.75y = 0.00 + 1.75y + -1.75y -3.25 + x2 + -1.75y = 1.75y + -1.75y Combine like terms: 1.75y + -1.75y = 0.00 -3.25 + x2 + -1.75y = 0.00 The solution to this equation could not be determined.
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