Răspuns :
Răspuns:
a=49:7:1+50:10
a=7:1+5
a=7+5
a=12
b=6×7-20:5-84
b=52-4-84
b=48-84
b=-36
A=49:7:1+50:10
A=7+5
A=12
B=6•7-20:5-84
B=42-4-84
B=38-84
B da cu minus
A=7+5
A=12
B=6•7-20:5-84
B=42-4-84
B=38-84
B da cu minus