Răspuns:
b) 8×9+1×121-1=
72+121-1=
193-1=192
d) 9× [ ( 8+7×11)× 4-3]+2 =
9× [ ( 8+ 77) × 4-3] +2=
9× ( 85×4-3) +2=
9× 350+2=
3150+2= 3152
