Question

23:(56х-16)+13=79

Answer 1

2*6/3*5х-2*6/3 +1/3=7/9
4/5х-4+1/3=7/9
4/5х=7/9-1/3+4
4/5х=4/9+4
4/5х=40/9
х=50/9

Answer 2

не правильно

Answer 3

2/3/5/6х-1/6=7/9-1/3
2/3/5/6х-1/6=4/9
5/6х-1/6=2/3:4/9
5/6х-1/6=2/3*9/4
5/6х-1/6=3/2
5/6х=3/2+1/6
5/6х=10/6
Х=2