Răspuns :
(0.156+2.5):1/2-3.312=
2.656:1/2-3.312=
2656/1000:1/2-3312/1000=
2656/1000*2/1-3312/1000=
5312/1000-3312/1000=2000/1000=2
2.656:1/2-3.312=
2656/1000:1/2-3312/1000=
2656/1000*2/1-3312/1000=
5312/1000-3312/1000=2000/1000=2