Question

dau 50 puncte pentru rezolvare!!!!!!
și coroanaa și de toate​

Answer 1

Explicație pas cu pas:

a) 3/7 : 4/3 : 9/14 = 3/7 × 3/4 × 14/9 = 3/4 × 2/3 = 1/2

b) 2/5:3/7:4/3= 2/5×7/3×3/4= 1/5×7×1/2= 7/10

c) 5 : ( 3 /10 : 9/2 ) = 5 : ( 3/10×2/9) = 5÷ (1/5×1/3) = 5 ÷ 1/15=5×15=75

d) (2/3 : 6 ) : (1/5 :3/10)= ( 2/3×1/6):(1/5×10/3)=(1/3×1/3):2/3=1/9×3/2=1/3×1/2=1/6

e) 4 : ( 1/2 : 1/8 ):(2/5:4/5) = 4: (1/2×8):(2/5×5/4)= 4 : 4 : 1/2= 1:1/2 = 2