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Simplifying 4x4 + -12x3 + 13x2 + -12 + a = 0 Reorder the terms: -12 + a + 13x2 + -12x3 + 4x4 = 0 Solving -12 + a + 13x2 + -12x3 + 4x4 = 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 + a + 13x2 + -12x3 + 12 + 4x4 = 0 + 12 Reorder the terms: -12 + 12 + a + 13x2 + -12x3 + 4x4 = 0 + 12 Combine like terms: -12 + 12 = 0 0 + a + 13x2 + -12x3 + 4x4 = 0 + 12 a + 13x2 + -12x3 + 4x4 = 0 + 12 Combine like terms: 0 + 12 = 12 a + 13x2 + -12x3 + 4x4 = 12 Add '-13x2' to each side of the equation. a + 13x2 + -12x3 + -13x2 + 4x4 = 12 + -13x2 Reorder the terms: a + 13x2 + -13x2 + -12x3 + 4x4 = 12 + -13x2 Combine like terms: 13x2 + -13x2 = 0 a + 0 + -12x3 + 4x4 = 12 + -13x2 a + -12x3 + 4x4 = 12 + -13x2 Add '12x3' to each side of the equation. a + -12x3 + 12x3 + 4x4 = 12 + -13x2 + 12x3 Combine like terms: -12x3 + 12x3 = 0 a + 0 + 4x4 = 12 + -13x2 + 12x3 a + 4x4 = 12 + -13x2 + 12x3 Add '-4x4' to each side of the equation. a + 4x4 + -4x4 = 12 + -13x2 + 12x3 + -4x4 Combine like terms: 4x4 + -4x4 = 0 a + 0 = 12 + -13x2 + 12x3 + -4x4 a = 12 + -13x2 + 12x3 + -4x4 Simplifying a = 12 + -13x2 + 12x3 + -4x4
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