1.
=7 5/22-3 4/22=4 1/22
2.
=-20.73-12.27=-33
3.
8/21÷4/42=8/21×42/4=4
0.3×4=1.2
4.
=3.8-2.7=1.1
5.
=4 18/15÷1.3=4 18/15÷1 3/10=
=78/15÷13/10=78/15×10/13=12/3=
=4.
6.
8.26×10^9 > 9.48×10^8
7.
=9/5=1 4/5=1.8
8.
!/ это корень
=(5(!/6+!/5)-3(!/6-!/5))/(6-5)=
=(5!/6+5!/5-3!/6+3!/5)/1=
=2!/6+8!/5