3/3 2/3 5/5
1/6 2/7 4/3
2/2 4/1 1/2
2/0 2/1 1/3
384:9=42(остаток 6)
217:6=36(остаток 1)
<span>15/16 x (24/25 : 9/10)=2529/82212813,</span>
14/15 : 7/5 x 9/10=<span>492/950301754</span>
<span>4/5 x 5/6 x 6/7 x 7/8
=2168/87067387
</span>
1)1/x-1/6¼x=3/25
1/x-4/25x=3/25
(25x-4x)/25x²=3/25
21/25x=3/25
21*25=3*25x
525=75x
x=525/75
x=7
2)2/x+2/5x=4/9
12/5x=4/9
108=20x
x=108/20
x=5,4
3)6/3+2/3x=2/3
(6x+2)/3x=2/3
3(6x+2)=3x*2
18x+6=6x
18x-6x=-6
12x=-6
x=-(6/12)
x=-½
А)
72,28
39,59
-------
32,69
б)
99,705
54,864
-------
34,841