5 4/7 : 1 5/21 - (5 2/15 * 3/22 + 1 14/15) = 1 целая 13/15
1) 5 2/15 * 3/22 = 77/15 * 3/22 = (7*1)/(5*2) = 7/10
2) 7/10 + 1 14/15 = 21/30 + 1 28/30 = 1 49/30 = 2 19/30
3) 5 4/7 : 1 5/21 = 39/7 : 26/21 = 39/7 * 21/26 = (3*3)/(1*2) = 9/2 = 4 1/2
4) 4 1/2 - 2 19/30 = 4 15/30 - 2 19/30 = 3 45/30 - 2 19/30 = 1 26/30 = 1 13/15
<span>6.28х-2.8х=36.54
3.48x=36.54
x=10.5
</span><span>х-5/11=5/33
x=5/33+5/11
x=20/33
</span>
Яблонь 7/24 деревьев,
вишен - 9/17 * (1 - 7/24) = 9/24,
а груш 1 - 7/24 - 9/24 = 8/24
<span>Следовательно, больше всего вишен.</span>