x=7/8:(-0,2)
x=-35/20
x=-7/4
Х:11=13 (ост7)
х=13*11+7
х=143+7
х=150
150:11=13 7/11
0,35 = 35%
<span>35+45=80% </span>
<span>100-80=20(24,6 га) </span>
<span>1%=24,6\20=1,23га </span>
<span>всё поле=1,23*100%=123га</span>
<span>11*(400+33*400:2)=77000</span>