1) 1 intreg 1/3/2,5
2,5= 2 intregi 5/10= 2 intregi 1/2= 5/2
1 intreg 1/3/5/2= 1 intreg 1/3 * 2/5= 1 intreg 2/15= 17/2
1 2/x= (x+2)/x
(x+2)/x= 17/2
17x =2(x+2)
17x =2x +4
17x-2x=4
15x=4
x= 4/15
2) 1, 25= 1 intreg 25/100= 1 intreg 1/4= 5/4
0,3=3/10
5/4/a= b/3/10
5/4 * 1/a= b * 10/3
5/4a=10b/3
10b=15/4a
b=15/4a/10
b=15/4a * 1/10
b=3/4a * 1/2
b= 4/8a
100a x b = 100 * a * 4/8a= 25 * 4/2= 25 *2=50