a)x=1/2-1/4
x=1/4
Vậy..
b)x=2/5+3/4
x=23/20
vậy...
c)x=9/35:2/7
x=9/10
vậy...
d)x=5.12/25
x=12/5
vậy...
tk mk nhoaa nếu thấy đúng nha mn
a)x+1/4=1/2
x =1/2-1/4
x =1/4
b)x-3/4=2/5
x =2/5+3/4
x =23/20
c)x x 2/7=9/35
x =9/35:2/7
x =9/10
d)x : 12/25 = 5
x =5 x 12/25
x =12/5
a) x + 1/4 = 1/2
x = 1/2 - 1/4
x = 1/4
Vậỵ x = 1/4
b) x - 3/4 = 2/5
x = 2/5 + 3/4
x = 23/20
Vậy x = 23/20
c) x x 2/7 = 9/35
x = 9/35 : 2/7
x = 9/10
Vậy x = 9/10
d) x : 12/25 = 5
x = 5 x 12/25
x = 12/5
Vậy x = 12/5
a) x= 1/2 - 1/4 x=1/4 b)x=2/5 + 3/4 x=23/20 c)x=9/35:2/7 x=9/10 d)x=5,12/25 x=12/5