Răspuns :
Răspuns:
Explicație pas cu pas:
a)x/y=3/4
y(2x/y+3)/y(4x/y+1)=(2·3/4+3)/(4·3/4+1)=3(1/2+1)(3+1)=12·3/2=18
b)x/y=7/9
(x/y+2)/(3x/y+1)=(7/9+2)/(3·7/9+1)=(7+18)/(3·7+9)=25/30=5/6
c)x/y=2/5
(7x/y+2)/(x/y+4)=(7·2+2·5)/(2+4·5)=24/12=2
d) x/y=3/11
(10x/y-1)/(x/y+1)=(10·3/11-1)(3/11+1)=(30-11)/(3+11)=19/14
Răspuns:
a) (2x+3y)/(4x+y)=(2*3+3*4)/(4*3+4)=15/16 ;
Explicație pas cu pas:
b) (7+2*9)/(3*7+9) =25/30=5/6 c) (7*2-2*5)/(2+4*5)=4/22=2/11 d) (10*3-11)(3+11)=19/14