1/14х-2/7*1ц 1/4=5
1/14х-2/7*5/4=5
1/14х-5/14=5
1/14х=5/1+5/14
1/14х=70/14+5/14
1/14х=75/14
х=75/14:1/14
х=75/14*14/1
х=75
1/14х-2/7*1ц 1/4=5
1/14х-2/7*5/4=5
1/14х-5/14=5
1/14х=5/1+5/14
1/14х=70/14+5/14
1/14х=75/14
х=75/14:1/14
х=75/14*14/1
х=75