Răspuns:
23-12=11
3+3+3=9
6²-6²+6⁰=36-36+1=1
(5+7)×2=10+14=24
1) 23-12= 11
2)3+3+3=9
3) 6 la a doua
36-36+36= 36
4) (5+7)2=
12 2
24