1)200*40-(200:40)=8000-5=7995
2)(270*200):100=54000:100=540
3)100000-(900000:10)=100000-90000=10000
4)810000/1*2/3=810000*2/3=27000*2=540000
(600676-675):1000:10=60
600676-675=600.000
600.000:1000=600
600:10=60
1) 16+11=27 2) 27:3=9 3) 9 х 7= 63 Была рада помочь)
(1/3х)х + (1/х)3х = 0
1х/3х^2 + 3/3х^2 = 0
1х + 3 = 0
1х = -3
х = -3 : 1
х = -3