189. 1) 4(5x+9y-z) 2)-6(-a-8b+7с) 3)(6p-n-4m)*(-1,6) 4)(-2,6a -b+1,4c)*(-m)...

Question

189.
1) 4(5x+9y-z)
2)-6(-a-8b+7с)
3)(6p-n-4m)*(-1,6)
4)(-2,6a -b+1,4c)*(-m)
5)-0,7n(7a-2,1+5k)
6-24(7/12x+0,5y-5/6z-0,3)

---

Answer 1

1) 4(5х+9у-z)=20x+36y-4z
2)-6(-a-8b+7с)=6a+48b-42c
3)(6p-n-4m)*(-1,6)=-9,6p+1,6n+6,4m
4)(-2,6a -b+1,4c)*(-m)=2,6am+bm-1,4cm
5)-0,7n(7a-2,1+5k)=-4,9na+1,47n-3,5nk
6-24(7/12x+0,5y-5/6z-0,3)=-24×7/12x-24×0,5y+24×5/6z+24×0,3=-84x-12y+20z+7,2