7 phan 5 x 15 phan 49 -22 phan 15 : 7 phan 5
1 tim cac so nguyen x,y biet
x/7=6/21
-5/y=20/28
1/2=x/12
x/8=-28/32
3/y=12/24
3/4=15/y
2 viet 3 phan so bang phan so -10/15
1 tim cac so nguyen x,y biet
x/7=6/21
-5/y=20/28
1/2=x/12
x/8=-28/32
3/y=12/24
3/4=15/y
2 viet 3 phan so bang phan so -10/15
giup mk ti di ak mk tick cho
3 phan x+5=15%
Tim so nguyen x , biet : 1 phan 6 = x phan 18 ; x phan 8 = -1 phan 4 ; 4 phan -5 = x phan 10 ; 11 phan 5 = -22 phan x ; x phan 8 = 8 phan x ; x phan -11 = -11 phan x
9 phan 14 + 8 phan 21
13 phan 15 - 7 phan 12
12 phan 19 . 7 phan 15. -13 phan 17.19 phan 12 . 17 phan 13
-3 phan 7 + 15 phan 26 - (2 phan 13 - 5 phan 17)
Rút gọn phân số sau đến tối giản
a/ -12 phần 30
b/ 9 x 70 phan 56 x 135
c/ 15 x 7 + 15 phần 3 - 18
