Question

DAU COROANA SI MULTE PUNCTE !!!!!

Answer 1

a) 0,(7):1/49+2,(3)+(1999/2540)°=
= 7/9 ×49+(23-2)/9+1=
=343/9+21/9+1=
=(343+21+9)/9=373/9=41,(4)



b) [(1,(3)-1/3)²:(0,5)²]:3+0,(6):1/2=
={[(13-1)/9-1/3]²:(1/2)²}:3+6/9 ×2=
=[(12/9-1/3)²×4]:3+12/9=
=[(4/3-1/3)² ×4]:3+4/3=
=(1² ×4):3+4/3=
=4/3+4/3=
=8/3=2,(6)