Tolong lengkapin jadi pecahan yg paling sederhana sama pake CARA ya

no 6
[tex] \frac{86}{129} = \frac{2}{3} [/tex]
no 7
[tex] \frac{68}{153} = \frac{4}{9} [/tex]
no 8
[tex] \frac{ 26}{?91} = \frac{2}{7} [/tex]
no 9
[tex] \frac{54}{72} = \frac{3}{4} [/tex]
no 10
[tex] \frac{ 70}{126} = \frac{5}{9} [/tex]