-28+32:(-4)-3×(-7) FPB dan KPK 15 ,20,32

-28+32:(-4)-3x(-7) = -15
semoga membantu maaf kalau salah

1.
- 28 + 32 ÷ (- 4) - 3 × (- 7)
= - 28 - 8 - 3 × (- 7)
= - 28 - 8 + 21
= - 36 + 21
= - 15

2.
15 = 3 × 5
20 = 2² × 5
32 = 2^5

FPB = Tidak Ada

KPK = 2^5 × 3 × 5
KPK = 32 × 15
KPK = 480

Maaf Kalau Salah