Решите пример |-3,8| : |-1,9| ; |3,5| + |-1 1/2| ; |-1 2/7| × |4 2/3|
|-3,8| : |-1,9|=3,8*1,9=7,22
|3,5| + |-1 1/2|=3,5+1,5=5
|-1 2/7| × |4 2/3|=1(2/7)*4(2/3)=9/7*14/3=18/3=6