Question

помогите срочно!!!!!!!!!

Answer 1

$1. (-1,8)*(-4,5)=1,8*4,5=8,1$

$2. -4\frac{2}{5} *\frac{10}{11}= -(\frac{22*10}{5*11})=-2*2= -4$

$3. +6,3*(-\frac{2}{3} )=6\frac{3}{10} *(-\frac{2}{3} )=-(\frac{63*2}{10*3})=-\frac{21}{5} =-4\frac{1}{5} =-4,2$