Rezolvati 300-bx8-109=47 si (48xc+216):40=27 repede dau coroana

Răspuns :

300-bx8=47+109
300-156=bx8
144=bx8
B=144:8
B=18


(48xc+216)=27x40
48xc=1080-216
C=864:48
C=18