Ответ:
1)Х -7/10=3/5
Х=3/5+7/10=6/10+7/10=13/10=1 3/10
2)13/18+Х=35/36
Х=35/36-13/18=35/36-26/36=9/36=1/4
3)19/24-Х=13/48
Х=19/24-13/48=38/48-13/48=25/48
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Ответ:
1)Х -7/10=3/5
Х=3/5+7/10=6/10+7/10=13/10=1 3/10
2)13/18+Х=35/36
Х=35/36-13/18=35/36-26/36=9/36=1/4
3)19/24-Х=13/48
Х=19/24-13/48=38/48-13/48=25/48