1 / 1/10–1/15 6(–1)6+2(–1)3
1) (1/10)–(1/15)=(3/30)–(2/30)=1/30 1:(1/30)=30 О т в е т. 30 2) (–1)6=1 (–1)3=–1 6·1+2·(–1)=6–2=4 О т в е т. 4