Răspuns :
49:m=7 m=49:7=7
e:3=8 e=8x3=24
124+a=542 a=542-124=418
745-b=313 745-313=b b=432
c-138=712 c=712+138=850
e:3=8 e=8x3=24
124+a=542 a=542-124=418
745-b=313 745-313=b b=432
c-138=712 c=712+138=850