Explicație pas cu pas:
36:9+4×[20+6×(100:4-42:2)]=
36:9+4×[20+6×(25-21)]=
36:9+4×(20+6×4)=
36:9+4×(20+24)=
36:9+4×44 =
4+176= 180
136-[(63×2:6+109)×(75:25+21:3)] :10=
136-[(126:6+109)×(3+21:3)] :10=
136-[(21+109)×(3+7)] :10=
136-(130×10):10=
136-1300:10=
136-130 = 6