Решите уравнения с дробями. 7/9 : х = 7/18, 26/27*х=13/54, х: 3/7=14/15, х-5/16=1/4. заранее !

1) х=7/9:7/18
х=7/9*18/7
х=2

2) х=13/54:26/27
х=13/54*27/26
х=1/4

3) х=14/15*3/7
х=2/5

4) х=1/4+5/16
х=4/16+5/16
х=9/16

7/9 : х = 7/18
х = 7/9 :7/18 = 2
х = 2

 
26/27*х=13/54
х=13/54 : 26/27 = 1/4
х = 1/4


х:3/7=14/15
х = 14/15 * 3/7 = 2/5
х = 2/5


х-5/16=1/4
х = 1/4 + 5/16 = 9/16
х = 9/16