Răspuns :
a= (6+70+64):10
a= (76+64):10
a= 140:10
a= 14
b= (5+200-165)x10
b= (205-165)x10
b= 40x10
b= 400
b-a= 400-14
b-a= 386
a= (76+64):10
a= 140:10
a= 14
b= (5+200-165)x10
b= (205-165)x10
b= 40x10
b= 400
b-a= 400-14
b-a= 386
a=(6+70+64)÷10
a=(76+64)÷10
a=140÷10
a=14
b=(50+400÷2-165)×10
b=(5+200-165)×10
b=(205-165)×10
b=40×10
b=400
a-b=14-400=-386
sau
b-a=400-14=386
a=(76+64)÷10
a=140÷10
a=14
b=(50+400÷2-165)×10
b=(5+200-165)×10
b=(205-165)×10
b=40×10
b=400
a-b=14-400=-386
sau
b-a=400-14=386