Question

Ex 10 cel mai inteligent răspuns!!!!! Va rog

Answer 1

(y+3)/4=5/6
6y+18=20
6y=2
y=2/6
y=1/3

8/(y-3)=5/7
5y-15=56
5y=71
y=71/5

3/4=(2y-1)/8
8y-4=24
8y=28
y=28/8
y=7/2

15/2=8/(3y-2)
45y-30=16
45y=46
y=46/45


2y/6=(y+1)/4
y/3=(y+1)/4
4y=3y+3
y=3

(y-4)/3=(y-5)/2
2y-8=3y-15
y=7

(2y-1)/(3y+5)=4/9
18y-9=12y+20
6y=29
y=29/6

(y-3)/2=(y+0,5)/5
5y-15=2y+1
3y=14
y=14/3

(y/5+2)/3y=(y-1/3)/15y
(y+10)/15y=(3y-1)45y
y+10=(3y-1)/3
3y+30=3y-1
+30y=-1  nu are solutii

(y²-1)/4=y²/3
3y²-3=4y²
y²=-3     
y=i√3    nu are solutii in Q

(y-2005)/(y-2006)=3/2
3y-6018=2y-4010
y=2008

y²/2=(y²+2)/3
3y²=2y²+4
y²=4
y=2
y=-2