tolong dijawab ya pakai cara ya

[tex]36. \: bertanding \: 40 \times \: \:menang \: 27 \: kalah \: 5 \: seri \: 8 \\ 27 \times 3 + 5 \times - 2 + 8 \times 1 \\ = 79 \: poin[/tex]
[tex]37. \: \frac{7}{8} \times \frac{5}{6} - \frac{2}{12} = \frac{27}{48} [/tex]
[tex]40. \: 9a + 54 = 40a - 8 \\ a = 2[/tex]