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Simplifying x2 + 7a + 12 = 0 Reorder the terms: 12 + 7a + x2 = 0 Solving 12 + 7a + x2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + 7a + -12 + x2 = 0 + -12 Reorder the terms: 12 + -12 + 7a + x2 = 0 + -12 Combine like terms: 12 + -12 = 0 0 + 7a + x2 = 0 + -12 7a + x2 = 0 + -12 Combine like terms: 0 + -12 = -12 7a + x2 = -12 Add '-1x2' to each side of the equation. 7a + x2 + -1x2 = -12 + -1x2 Combine like terms: x2 + -1x2 = 0 7a + 0 = -12 + -1x2 7a = -12 + -1x2 Divide each side by '7'. a = -1.714285714 + -0.1428571429x2 Simplifying a = -1.714285714 + -0.1428571429x2
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