Ответ:
1)5x•(-2,4y)= -12xy
2)-2/15a•(-30c)=4ac
3)-0,4p•2/5n•(-3/8b)= -0,4p•(2:5=0,4n)•(-3/8b)= -0,4p•0,4n•(-3,8b)= -0,16pn•(-3/8b)=0,06pnb
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Ответ:
1)5x•(-2,4y)= -12xy
2)-2/15a•(-30c)=4ac
3)-0,4p•2/5n•(-3/8b)= -0,4p•(2:5=0,4n)•(-3/8b)= -0,4p•0,4n•(-3,8b)= -0,16pn•(-3/8b)=0,06pnb