Question

Vă rog ajutați.mă , chiar am nevoie
Unde e incercuit faceți doar acele puncte

Answer 1

a) (4/15)/(8/9) =4/15x9/8 =3/10
b) (6/7)/( 3/14) = 6/7x14/3 =4
c) (8/25)/(16/10)=8/25x10/16 =1/5 
d) =(7/3)/(10/9) = 7/3x9/10 = 21/10
e) =(6/9)/(2/3) = 6/9x3/2 =1 

4 a) 2si1/2 = 5/2
 2si2/17 =36/17
1si19/81 =100/81
 
E =[(5/2):(36/17)]/[(100/81):(40/51)] =
E =[(5/2x17/36)]/[(100/81)x(51/40)]
E = [(5x17)/(2x6) ] x (100x51)/(81x40 ) =
E =9/2