Bai 1:Thuc hien phep tinh sau:
a)1125:1123-35:(110+23)-60
b)2345-1000;[19-2(21-18)2]
c)128-[68+8(37-35)2]:4
d)107-{38+[7.32-24:6+(9-7)3]};15
e)50-[50-23.5):2+3]
Bai 2:Tim x \(\in\)N biet:
a)5.(x-9)=350-52 b)2.(x-51)=2.23+20 c)2.3x=162
Help me ! Thank you !!!