Tim x
Bai 1 tim x
a X - 3/8 = 8 va 3/2
b 2 x X + 1 va 1/3 = 4 va 2/7
c X : 4 - 2/15 = 1/30
d 2 va 1/7 : X = 2 - 3/4
Bai 2 tim x
a 3 x ( X - 1/2 ) -1/4 = 3/8
b 3/5 + 2/5 : ( X - 1 ) = 2
c 10 x X - X = 17 va 14/15 + 18 va 1/15
d X + 3 X + 1
---------- = ----------
12 6