4х - 5/7 = 1
4х = 1 + 5/7
4х = 7/7 + 5/7
4х = 12/7
х = 12/7 : 4
х = 12/7 · 1/4 = (3·1)/(7·1)
х = 3/7
ответ: 3/7.
4х - 5/7 = 1
4х = 1 + 5/7
4х = 7/7 + 5/7
4х = 12/7
х = 12/7 : 4
х = 12/7 · 1/4 = (3·1)/(7·1)
х = 3/7
ответ: 3/7.