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Simplifying (x + -1a)(x + -7) = 0 Reorder the terms: (-1a + x)(x + -7) = 0 Reorder the terms: (-1a + x)(-7 + x) = 0 Multiply (-1a + x) * (-7 + x) (-1a * (-7 + x) + x(-7 + x)) = 0 ((-7 * -1a + x * -1a) + x(-7 + x)) = 0 ((7a + -1ax) + x(-7 + x)) = 0 (7a + -1ax + (-7 * x + x * x)) = 0 (7a + -1ax + (-7x + x2)) = 0 (7a + -1ax + -7x + x2) = 0 Solving 7a + -1ax + -7x + x2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7x' to each side of the equation. 7a + -1ax + -7x + 7x + x2 = 0 + 7x Combine like terms: -7x + 7x = 0 7a + -1ax + 0 + x2 = 0 + 7x 7a + -1ax + x2 = 0 + 7x Remove the zero: 7a + -1ax + x2 = 7x Add '-1x2' to each side of the equation. 7a + -1ax + x2 + -1x2 = 7x + -1x2 Combine like terms: x2 + -1x2 = 0 7a + -1ax + 0 = 7x + -1x2 7a + -1ax = 7x + -1x2 Reorder the terms: 7a + -1ax + -7x + x2 = 7x + -7x + -1x2 + x2 Combine like terms: 7x + -7x = 0 7a + -1ax + -7x + x2 = 0 + -1x2 + x2 7a + -1ax + -7x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 7a + -1ax + -7x + x2 = 0 The solution to this equation could not be determined.
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