Question

1/х+3/2=3/4
2 5х
решите уравнение пж

Answer 1

1/х+3/2 2/5х=3/4

2 2/5+3
----------- =3/4
2 2/5х

5 2/5
------- =3/4
2 2/5х

2 2/5х=5 2/5:3/4
2 2/5х=36/5
12/5х=36/5
х=36/5:12/5=36/5*5/12
х=3
--------------------------------
проверка
1      3
-- + ---------=3/4
3     2 2/5*3

1       3
-- +  ------- =3/4
3      36/5
1       5
--- + ----=3/4
3      12

4        5
--- +------=3/4
12     12

9/12=3/4
3/4=3/4