Упростите выражение
1. 4,2m(-1,8)(-2,5n)
2. 1. 7/9a(-3/4c)*2. 1/3
3. -6x3y(-5c)
4. -16,5p(-2/9)(-5/18)
5. (n-5.8)-(2.9+n)
6. -5m(-4n)8k
7. -19,5a*5/8b*5/6
8. 7,2-a+4,7+a-7.2-9.3
9. 3.8x(-0.35y)(-2.3)
10. (с+5.5)-(4.9+c)
11. 9/16p(-1.1/3)*3/7
12. -3(-7k)(-4p)
13. 8/15x(-2.1/2)(-1.1/2b)
14. 4.8+a-13.9-b+a-4.8
15. -2.4m(-3.2n)p
16. 9.6c5/9(-3/7)
17. -(n-4.8)+(-3.8+n)