6 ton - 7,8 kuintal + 43 kg = pon

1 ton = 1000 kg
1 kuintal = 100 kg
1 kg = 2 pon

[6.(1000) - 7,8(100) + 43 ] kg
[6000 - 780 + 43] kg
5263 kg

5263 kg
= [5263 . 2] pon
= 10526 pon

6 ton - 7,8 kuintal + 43 kg
6000 kg - 780 kg + 43 kg
5220 kg + 43 kg
5263 kg = 11602,93 pon

semoga membantu :)