Question

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)-6bt-1/3by+bc
2) -6xym+7.2xyc-0.2txy+xy
3)0.45mn-1.8bcmn+2.1bmn-3cmn