1. 27.83
2 0.32
3 29.671
4. 19.2
5 3.5
6 31.246
7 Р= (5.9+8.1)*2=22.1
8 19.89
9 4,565=4000+500+60+5
10. (x−18,2)+0,33=4,3
х- 18.2+0.33=4.3
х-17.87=4.3
х=4.3+17.87
х=22.17
11. 74,5−(t−0,38)=31.
74.5-t+0.38=31
74.88-t=31
-t=31-74.88
-t=-43. 88
t=43.88