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Simplifying 2x2 + 13a + -7 = 0 Reorder the terms: -7 + 13a + 2x2 = 0 Solving -7 + 13a + 2x2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 13a + 7 + 2x2 = 0 + 7 Reorder the terms: -7 + 7 + 13a + 2x2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 13a + 2x2 = 0 + 7 13a + 2x2 = 0 + 7 Combine like terms: 0 + 7 = 7 13a + 2x2 = 7 Add '-2x2' to each side of the equation. 13a + 2x2 + -2x2 = 7 + -2x2 Combine like terms: 2x2 + -2x2 = 0 13a + 0 = 7 + -2x2 13a = 7 + -2x2 Divide each side by '13'. a = 0.5384615385 + -0.1538461538x2 Simplifying a = 0.5384615385 + -0.1538461538x2
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