(16-14)×5 56+13-17 30+8×4 = 18 474
1) (2,097*79,02)/(20,97*7,902) =1
2)<span>5379^2 - 5378 * 5380=
=28933641-28933640=1</span>
3)√96+√24-√216=
=√96+24-216=√120-216=
=√-96
3-5(х+2)=2х
3-5х-10-2х=0
-7х-7=0
-7х=7
х= -1
1 )8/11×11/13 = 8/13
2)7/10×25/27 = 35/52
3) 5/7÷/7
4) 16/25÷3/5 = 16/25*5/3 = 16/5*1/3 = 16/15 = 1 1/5