Tim a biet:
a/30=28/24
TIM A BT
A/30=28/24
\(\frac{A}{30}=\frac{28}{24}\)
\(\Rightarrow A=\frac{30.28}{24}=35\)
Vậy...
a/30 = 28/24
suy ra a.24 = 30.28
suy ra a.24 = 840
suy ra a= 840 : 24
suy ra a= 35
\(\frac{A}{30}=\frac{28}{24}\)
\(\Rightarrow A\cdot24=30\cdot28\)
\(A\cdot24=840\)
\(A=840:24\)
\(A=35\)
tim a,biet:a:9=2009:90
Tim a , b nguyen biet:a-b=ab
Tim x biet:A. 2/3+x=-45%
B:x/5=5/6+-19/30.ai nhanh tay giai gium cho minh thi minh tick cho!
tim 2 so a va b biet:a-b=0,9va a nhân 6-b=6,4
1.tim ab biet:a,b=b,a*3+1,3
2.tim ab biet:â*ab=abb+ab
3.tim abc biet:abc+acb=ccc
tim ba so a;b;c biet:a+b-c=-3;a-b+c=11;a-b-c=-1
tim tong hai so tu nhien lien tiep a va b biet:a<2014,589<b
tim a,b thuoc N* biet:a+b=224,UCLN(a,b)=56
ai nhanh mk tick