Question

помогите, пжпж
срочно надо

Answer 1

a)            

$-2,5*(-0,52)*4\\2,5*0,52*4\\10*0,52\\5,2$

б)  $7,1*(-\frac{3}{4})*1\frac{1}{3} \\\frac{71}{10} *(-\frac{3}{4})*1\frac{1}{3}\\\frac{71}{10} *(-\frac{3}{4})*\frac{4}{3}\\-\frac{71}{10} *\frac{3}{4}*\frac{4}{3}\\-\frac{71}{10} *\frac{1}{4}*4\\-\frac{71}{10}$