Question

tim a,b biet a/b = 7/8 va UCLN(a,b)=12

Answer 1

vì a/b = 7/8 

mà UCLN(a,b)=12

Answer 2

7/8 va ucln la gi vay

Answer 3

suy ra a= 7*12=84

8*12=96

Answer 4

\(\frac{a}{b}\)=\(\frac{7}{8}\) \(\Rightarrow\) a = 7k, b = 8k voi k \(\in\) N*

UCLN(a,b)=12

\(\Rightarrow\) UCLN(7k,8k)=12

ma 7,8 la 2 so nguen to cung nhau nen k=12

vay a=12*7=84

      b=12*8=96

                        vay \(\frac{a}{b}\) =\(\frac{84}{96}\)