3264:68:x=127
6072:(425-x)=253
6/13:(1/2-x)=15/39
8/7:x+3/5=6/7
3/4x x:1/2=4/5
3264:68:x=127 6072:(425-x)=253 6/13:(1/2-x)=15/39 8/7:x+3/5=6/7 3/4x x:1/2=4/5
By Allison
By Allison
3264:68:x=127
6072:(425-x)=253
6/13:(1/2-x)=15/39
8/7:x+3/5=6/7
3/4x x:1/2=4/5
3264:68:x=127
48 :x=127
x=127×48
x=6096
6072:(425-x)=253
425-x=6072:253
425-x=24
x=425-24
x=421
6/13:(1/2-x)=15/39
1/2-x =6/13:15/39
1/2-x = 6/5
x = 6/5+1/2
x = 7/10
8/7:x+3/5=6/7
8/7:x = 6/7-3/5
8/7:x = 9/35
x = 8/7-9/35
x = 40/9
3/4x x:1/2=4/5
3/4x x = 4/5×1/2
3/4x x = 2/5
x = 3/4×2/5
x = 3/10
a) 3264 : 68 : x = 127
48 : x = 127
x = 48 : 127
x = 48/127
Vậy x = 48/127
b) 6072 : (425 – x) = 253
425 – x = 6072 : 253
425 – x = 24
x = 425 – 24
x = 401
Vậy x = 401
c) 6/13 : (1/2 – x) = 15/39
1/2 – x = 6/13 : 15/39
1/2 – x = 6/5
x = 1/2 – 6/5
x = -7/10
Vậy x = -7/10
d) 8/7 : x + 3/5 = 6/7
8/7 : x = 6/7 – 3/5
8/7 : x = 9/35
x = 8/7 : 9/35
x = 40/9
Vậy x = 40/9
e) 3/4 x X : 1/2 = 4/5
3/4 x X = 4/5 x 1/2
3/4 x X = 2/5
X = 2/5 : 3/4
X = 8/15
Vậy X = 8/15