y/1·56/90=35/27 56y/90=35/27 56y·27=35·90 y=(35·90)/(56·27)=simplif.cu 7 si 3=(5·30)/(8·9) y=150/72=simplif.cu 6=25/12 deci 25/12·56/90=1400/1080=simplif.cu 2=700/540=70/54=simplif.cu 2=35/27

n * [latex] frac{56}{90}=frac{35}{27}[/latex]  [latex] n;=;frac{35}{27};cdot;frac{90}{56}=(dupa,simplificari)= 25/12=[/latex]