13. Te ştiu perseverent. Dovedeşte efectuând calculele.
a) 1+918: ([12+3 (576:12-4-12)]:4+6)=
b) (507+15-[15 (318:53+408:34):45-6]:21):13=
c) (711-2-[85: (676:52-804:67)+11237]:37):33=
d) (4+[(6+8944:43): 107+9214]:24:6):17=
e) 2 (16+[1+(15759:51+9):53]-39}:17-34=
f) [12 (2650:25-3366:34): 14+6]:6=
g) ([1+(1024:16+879):23]:14+286):17=h)
{[(126:18+147):14+121]:12-1)-11=
1) [39-(2+576:48):7+7]:17-155:31= j) [15-(1660:83+154:11):17+6]:9=
k) 470-36:90-(200-32): 14=
1) 3+18-[24-15-32-(576:24-196:14)]=
m) [(348:12-676:26) 3:9-11-15+1=
n) 13+16-(360:24+1024:128):23=
as