Question

Помогите, пожалуйста, решить. ​

Answer 1

Ответ:

#1

1/6+5/6=6/6=1 3 2/7+5/7=3 7/7=4 3 2/7-2/7=3

3 2/7-3=2/7 3 2/7+3=6 2/7

#2

2/3+1/7=14/21+3/21=17/21 2/3+5/6=4/6+5/6=9/6=1 3/6=1 1/2 2/14+1/21=6/42+2/41=8/42=4/21

#3

(-1)-(-1)=(-1×-1×-1×-1)-(-1×-1×-1)= -1 - -1=-2

второй пример хз

#4

-2+7(57-12×3)=-2+7(57-36)=-2+7×21=-2+147=145

#5

3×3÷3=3×3×3×3×3×3×3×3×3×3×3×3×3÷3×3×3×3×3×3×3×3×3=1594323÷19 683=81