\(\frac{5}{7}=\frac{a+34}{189}=\frac{a+34}{7x27}=\frac{5x27}{7x27}\)
\(\Rightarrow a+34=5x27=135\)
\(a=135-34=101\)
\(\frac{5}{7}=\frac{a+34}{189}=\frac{a+34}{7x27}=\frac{5x27}{7x27}\)
\(\Rightarrow a+34=5x27=135\)
\(a=135-34=101\)
7/2<a<14/3.Tim a biet a la so tu nhien
tim so tu nhien co 2 chu so biet tong 2chu so bang 8 va hieu 2 so bang 4 -
tim SO TU NHIEN CO 4 CHU so ,biet khi vietf tfhem chu SO 7 BEN FI so do thi duoc SO CO 5 CHU so lon hon SO FI TIM 11212 DON VI
cho so tu nhien abc biet no gap 5 lan tich cac cs cua no. tim so a?
cho phan so 21/33 tim so tu nhien n biet sao cho khi lay tu so va mau so cong voi n ta duoc phan so moi rut gon phan so ta duoc phan so 5/7
tim hai so tu nhien : so lon chia so be bang 3 du 7
tim hai so biet hieu bang 257
tong cua ba so tu nhien lien tiep bang 189 tim ba so do
tim cac so tu nhien biet x biet
24 : x + 16 : x =5
tim hai so tu nhien , biet tong cua chung bang 2015 va biet giua chung co 20 so tu nhien khac