Question

помогите училка монстр пж​

Answer 1

Ответ:

1.

х=12/7-5/7

х=7/7

2.

х=7/38+12/38

x=19/38

3.

108/111-n=6/111+50/111

108/111-n=56/111

n=108/111-56/111

n=52/111

4.

a+12/53=48/53-10/53

a+12/53=38/53

a=38/53-12/53

a=26/53