Tim phan so a/b thoa man:
Phan so a/b=45/100 va UCLN(a,b)=13
tim phan so a/b bang phan so 18/27 biet rang ucln(a,b)=13
ta co 18/27=2/3
a=2t,b=3t
ucln(2t,3t)=t=13
a=2.13=26
b=3.13=39
tim phan so \(\frac{a}{b}\)phan so \(\frac{45}{125}\)va UCLN(a;b)=11
tim \(\frac{a}{b}\)
Ta co : a/b = 45/125 = 9/25
=> a/b = 9.k/25.k
Vi 9/25 la phan so toi gian
=>k=UCLN(a,b)=11
=>k=11
=>a/b = 9.11/25.11 = 99/275
NHỚ TICK CHO MK NHÉ!
tim phan so a/b bang phan so 18/27, biet rang ucln (a,b) 13
bang
Ta có a/b=18/27=2/3
Vì WCLN là 13
=> a/b=26/39
Ta có a/b=18/27=2/3
Vì WCLN là 13
=> a/b=26/39
tim phan so a/b biet a/b=21/35 va ucln (a,b)=20
Tim so tu nhien a va b sao cho
a . b = 24300 va UCLN ( a,b ) = 45
Cho phan so a/b
a, =45/54 va UCLN= 12
Tim x
a, tim cac so nguyen x,y sao cho y/3 - 1/x = 1/3
b,tim cac so a va b biet a - b =5 va UCLN (a,b)/BCNN (a,b) =1/6
Luu y a/b tua la a phan b
tim 2 so tu nhien a va b (a>b),biet rang a+b=270 va UCLN(a,b)=45
1. Tim a,b thuoc so tu nhien
a. Bcnn(a,b) = 40; ucln =10
b. a - b = 48 , ucln = 12 va 10<a,b<100
c. a x b = 180, ucln = 6
d. ax b = 216, ucln = 6
e. a + b = 128, ucln = 16
2. tim ucln voi n thuoc so tu nhien (ghi cach trinh bay)
14n + 3 va 21n+ 4
giup bai 1 gium di ma , thu 2 nop bai roi