Question

Bài 3:

a)6/-x=x/-24

b)9/x=-35/105

c)x-1/8=5/8

d)x-1/2-(3/2+x)=-2

e)x+1/3=-12/5.10/6

Giúp mình với a,mình đang cần gấp.Cảm ơn nhiều a!!

Answer 1

a) 6/-x=x/-24

=> -x.x=6.-24

=>-x.x=-144

=>x=12 hay x=-12

b)9/x=-35/105

=>9/x=-1/3

=>x=9.3/-1=-27

=>x=-27

c)x-1/8=5/8

=>x=5/8+1/8

=>x=3/4

d)x-1/2-(3/2+x)=-2

=>-x+4/2=-2

=>-x/2=0

=>x=0

e)x+1/3=-12/5.10/6

x+1/3=-4

x=-4-1/3

x= -13/3

#YM