Question

помогитеееее, срочно надо​

Answer 1

$\displaystyle 1)15,4(-2,3)+(-5,4)(-2,3)=-15,4*2,3+5,4*2,3=-2,3(15,4-5,4)=\\ \\ -2,3*10=-23\\\\2)-1\frac{11}{15}*2\frac{6}{35}(-4\frac{37}{32})(-\frac{15}{38})=-\frac{26}{15}*\frac{76}{35}(-\frac{245}{52})(-\frac{15}{38})=-2*\frac{7}{2}=-7$