Ответ:
1) a)x/6=7/4,2
x/6=7/21/5
x/6=5/3
3x=30
x=10.
б)2 1/7
2*7+1/7
14+1/7
15/7
в)2 18/28
2*28+19/28
56+19/28
75/28
в) 3 3/4
3*4+3/4
12+3/4
15/4
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Ответ:
1) a)x/6=7/4,2
x/6=7/21/5
x/6=5/3
3x=30
x=10.
б)2 1/7
2*7+1/7
14+1/7
15/7
в)2 18/28
2*28+19/28
56+19/28
75/28
в) 3 3/4
3*4+3/4
12+3/4
15/4