1)
101/20-25/12=1212-500/240=712/240
2)
64/15-89/40=2560-1335/600=1225/600
3)
65/16-125/39=2535-2000/624=535/624
1)![2\frac{232}{420}](/tpl/images/0942/7282/2b16a.png)
101/20-25/12=1212-500/240=712/240
2)![2\frac{25}{600}](/tpl/images/0942/7282/18377.png)
64/15-89/40=2560-1335/600=1225/600
3)![\frac{535}{624}](/tpl/images/0942/7282/63b2a.png)
65/16-125/39=2535-2000/624=535/624