Помогите,задание,раскройте скобки:1)3/7b(-14t-7/9y+2 1/3c) 2)-1,2xy(5m-6c+1/6t-5/6)...

Question

Помогите,задание,раскройте скобки:1)3/7b(-14t-7/9y+2 1/3c)
2)-1,2xy(5m-6c+1/6t-5/6)
3)0,3mn(1,5-6bc+7b-10c)

Answer 1

1)3/7b(-14t-7/9y+2 1/3c)= -6bt-1/3by+BC;//// 2)-1,2xy(5m-6c+1/6t-5/6)= -6xym+7 1/5xyc-1/5xyt+xy;//// 3)0,3mn(1,5-6bc+7b-10c)= 0,45mn-1,8mnbc+2,1mnb-3mnc