3,5 kodi - 2,25 lusin + 2 gross = ___ biji???? [ Pakai Cara ! ]

3,5 kodi=3,5×20=70 biji
2,25 lusin=2,25×12=27 biji
2 gross=2×144=288 biji

3,5 kodi-2,25 lusin+2 gross
=70 biji-27 biji+288 biji
=331 biji

3,5 kodi = 3,5 x 20biji = 70biji
2,25lusin + 2,25 x 12biji = 27biji
_________________________ -
……...………......................... 43biji
2gross = 2 x 144biji= 288biji
__________________________ +
...…..................................... 331biji