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Simplifying 13 + -1z(a + -1) = 9 + a Reorder the terms: 13 + -1z(-1 + a) = 9 + a 13 + (-1 * -1z + a * -1z) = 9 + a Reorder the terms: 13 + (-1az + 1z) = 9 + a 13 + (-1az + 1z) = 9 + a Solving 13 + -1az + 1z = 9 + a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1a' to each side of the equation. 13 + -1az + -1a + 1z = 9 + a + -1a Reorder the terms: 13 + -1a + -1az + 1z = 9 + a + -1a Combine like terms: a + -1a = 0 13 + -1a + -1az + 1z = 9 + 0 13 + -1a + -1az + 1z = 9 Add '-13' to each side of the equation. 13 + -1a + -1az + -13 + 1z = 9 + -13 Reorder the terms: 13 + -13 + -1a + -1az + 1z = 9 + -13 Combine like terms: 13 + -13 = 0 0 + -1a + -1az + 1z = 9 + -13 -1a + -1az + 1z = 9 + -13 Combine like terms: 9 + -13 = -4 -1a + -1az + 1z = -4 Add '-1z' to each side of the equation. -1a + -1az + 1z + -1z = -4 + -1z Combine like terms: 1z + -1z = 0 -1a + -1az + 0 = -4 + -1z -1a + -1az = -4 + -1z Reorder the terms: 4 + -1a + -1az + z = -4 + -1z + 4 + z Reorder the terms: 4 + -1a + -1az + z = -4 + 4 + -1z + z Combine like terms: -4 + 4 = 0 4 + -1a + -1az + z = 0 + -1z + z 4 + -1a + -1az + z = -1z + z Combine like terms: -1z + z = 0 4 + -1a + -1az + z = 0 The solution to this equation could not be determined.
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