16/3х - 1 = 11/9
16/3х = 11/9 + 9/9
16/3х = 20/9
4/3х = 5/9
х = 3,75/9 = 375/900 = 5/12
ответ: х = 5/12.
18/49 : х = 6/35
х = 18/49 : 6/35
х = 18/49 * 35/6 = 630/294 = 15/7 = 2 1/7.
ответ: х = 2 1/7.
1) 5 1/3x - 1 = 1 2/9
16/3x = 1 2/9 + 1
16/3x = 20/9
x = (20/9) ÷ (-16/3)
x = 20/9 · 3/16
x = 5/12
2) 18/49 ÷ x = 6/35
x = 6/35 ÷ 18/49
x = 6/35 · 49/18
x = 7/15
