tolong kerjakan nomor 1 - 7 pakai cara ya

1.
A.135 - 25 = 110
B.25 : 110 = 5 : 22
C.110 : 135 = 22 : 27
2.
A.80 - 8 = 72
B.80 : 72 = 40 : 36 = 20 : 18 = 10 : 9
3.
25 : 45 = 5 : 9
4.
siswa laki laki ada = 40 - 24 = 16
16 : 24 = 2 : 3
5.
30 ÷ 2 = 15
15 × 3 = 45

semoga membantu :)