Question

№629
1)3/16 •1/3•(-5 1/3)=
2)(-2/19)•(-3/4)•(-9 1/2)=
3)7/20•(-3/17)•(-8 2/21)=
4)(-13/25)•(-5 10/13)•2/3=​

Answer 1

Ответ:

3/16•1/3•(-5 1/3)=-3•1•16/16•3•3=-1/3

2)(-2/19)•(-3/4)•(-9 1/2)=-2•3•19/19•4•2=-3/4

3)7/20•(-3/17)•(-8 2/21)=7•3•170/20•17•21=1/2

4)(-13/25)•(-5 10/13)•2/3=13•75•2/25•13•2=3