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 23/10/2021 Bởi 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 Bình luận
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 Bình luận
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