Ответ:
Пошаговое объяснение:
1)8 2/15 -(x + 3 5/14) : 5 5/8 = 7 1/3
(x + 3 5/14 ) : 5 5/8 = 8 2/15 - 7 1/3
(x + 3 5/14 ) : 5 5/8 = 8 2/15 - 7 5/15
(x + 3 5/14 ) : 5 5/8 = 4/5
x + 3 5/14 = 4/5 * 5 5/8
x + 3 5/14 = 4/5 * 45/8
x + 3 5/14 = 9/2
x = 9/2 - 3 5/14
x = 4 7/14 - 3 5/14
x = 1 2/14
x = 1 1/7
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2) 2 7/9 : ( 3 3/4 y - 11 2/3) + 1 6/7 = 2 4/21
2 7/9 : ( 3 3/4 y - 11 2/3) = 2 4/21 - 1 6/7
2 7/9 : ( 3 3/4 y - 11 2/3) = 2 4/21 - 1 18/21
2 7/9 : ( 3 3/4 y - 11 2/3) = 1/3
3 3/4 y - 11 2/3 = 2 7/9 : 1/3
3 3/4 y - 11 2/3 = 25/9 * 3
3 3/4 y - 11 2/3 = 25/3
3 3/4 y = 25/3 + 11 2/3
3 3/4 y = 11 27/3
3 3/4 y = 20
y = 20 : 3 3/4
y = 20 * 4/15
y = 16/3
y = 5 1/3