Решите УРАВНЕНИЯ 1)x+13/21=3/5+24/35 2)x+5/16=3/8+1/6 3)8/9-(x+1/6)=5/27

Question

Решите УРАВНЕНИЯ
1)x+13/21=3/5+24/35
2)x+5/16=3/8+1/6
3)8/9-(x+1/6)=5/27

Answer 1

1)x+13/21=3/5+24/35;
x=3/5+24/35-13/21 ;
x=21/35+24/35-13/21;
x=45/35-13/21;
x=135/105-65/105;
x=70/105
x=2/3
Ответ: 2/3.

2)x+5/16=3/8+1/6;
x=3/8+1/6-5/16 ;
x=9/24+4/24-5/16;
x=13/24-5/16;
x=26/48-15/48;
x=11/48
Ответ: 11/48.

3)8/9-(x+1/6)=5/27;
(x+1/6)=8/9-5/27;
(x+1/6)=24/27-5/27;
(x+1/6)=19/27
x=19/27-1/6
x=38/54-9/54
x=29/54
Ответ: 29/54.