<span>1000-(990:10-1)=902 </span>
<span><span>960:(2+6)=120</span></span>
1) x=-4,y=-0,5; x=-2,y=-1; x=2, y=1
2)y=-2, x=1; y=0,5, x=4; y=4, x=0,5
А) 23:4 28:5
б)нет
23:4=5 (ост.3); 37:5=7 (ост.2); 54:4=13 (ост.1); 28:5= 5 (ост.3); 30:4=7(ост.2); 36:5=7 (ост.1); 71:4= 17 (ост. 3); <span>39:5=7 (ост.4)</span>