0,7542×220+0,2458×220-20,9=165,924+54,076-20,9=199,100
б) 66,6×10-44,4×10+8,11=666-444+8,11=230,11
<span>1)-x=43, х=-43
2)-x=-82, х=82</span>
<span>3/8 y+2/3y-3/4y = 7/24 y
</span> 7/24 * 3 1/7 = 22/24 = 11/12
4. 358
5. 612
6.не знаю
8. 1. 97
2. 802, 803
1) 4*(c-d)=4*125=500
2)23*(x-y)=23*4=92
3)56*(p-r)=56*11=616