1) 3/8×(-4)+5=-3/2+5=7/2
2) 5/9÷(-1/3)-7=-5/3-7=-26/3
3) 2/5×(-3)-4/5=-6/5-4/5=-10/5
4 3 14 4 2 * 4 8 3
- х = 2--- : 1--- = ---- * ---- = ------- = ---- = 1---
5 4 5 7 5 * 1 5 5
х = - 1 целая 3/5
93-28×2+41-(24+48)×4=
1) 24+48=72
2) 28×2=56
3) 72×4=288
4)93-56=37
5) 37+41=78
6) 78-288= - 210