Step-by-step explanation:
[tex] \frac{a}{4} - 1 \times \frac{5}{6} = \frac{ - 1}{2} \\ \\ \frac{a}{4} - \frac{5}{6} = \frac{ - 1}{2} \\ \\ \frac{a}{4} + \frac{4( \frac{ - 5}{6}) }{4} = \frac{ - 1}{2} \\ \\ \frac{a + 4( - \frac{5}{6}) }{4} = \frac{ - 1}{2} [/tex]
α = 4/3
i hope this help ^^
