1 1/3×(-3/4)-(-2 1/7)×1 2/5 срочно!!!!
1 1/3×(-3/4)-(-2 1/7)×1 2/5=2 1 1/3×(-3/4)=4/3×(-3/4)= -1 (-2 1/7)×1 2/5=(-15/7)×7/5= -3 -1+3=2
4/3×(-3/4) - (- 15/7)×7/5=-1-(-3)=-2