5 ton - 20 kwintal + 45000 gram =.... kg

5 ton = 5 × 1000 = 5.000 kg
20 kw = 20 × 100 = 2.000 kg
45000 g = 45000 : 1000 = 45 kg

Maka, 5 ton - 20 kw + 45000 g = 5000 - 2000 + 45 = 3000 + 45 = 3.045 kg

Kalau gak salah begitu. Terimakasih ^_^