A)6 7/9 -x=4 2/9
x=6 7/9 - 4 2/9
x=2 5/9
Б)y+2 6/7 = 5 3/7
y=5 3/7 - 2 6/7
y=2 4/7
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Ответ:б)7y=18
A)6 7/9 -x=4 2/9
x=6 7/9 - 4 2/9
x=2 5/9
Б)y+2 6/7 = 5 3/7
y=5 3/7 - 2 6/7
y=2 4/7