tolong ya jawab no 1-6 aja besok dikumpul pakai cara

1) -5×(-9)+(-75):(-15)
45+5=50
hitungnya × dlu, terus : baru +

2) K | 36 | 60 | 84 | F FPB =
2 | 18 | 30 | 42 | 2 2×2×3 = 12
2 | 9 | 15 | 21 | 2
3 | 3 | 5 | 7 | 3
3 | 1 | 5 | 7 | -
5 | 1 | 1 | 7 | -
7 | 1 | 1 | 1 | -