Răspuns :
a=3×12+600:10-29
a=36+60-29
a= 96-29
a=67
b= 456-68:2-56×3
b=456-34-168
b= 254
c=348-348:4-120
c= 348-87-120
c= 141
a+b-c = 67+254-141=321-141=180
a=3×12+600:10-29
a=36+60-29
a= 96-29
a=67
b= 456-68:2-56×3
b=456-34-168
b= 254
c=348-348:4-120
c= 348-87-120
c= 141
a+b-c = 67+254-141=321-141=180