Ответ:
1) 1/2+ 1/4= 2/4+1/4=3/4
2)2 1/3+1 2/9= 2 3/9+1 2/9= 3 5/9
3)х=49:7
х=7
4)х=8
5) 2 1/8-1 1/4= 2 1/8-1 2/8=1 9/8-1 1/8 =8/8=1
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Ответ:
1) 1/2+ 1/4= 2/4+1/4=3/4
2)2 1/3+1 2/9= 2 3/9+1 2/9= 3 5/9
3)х=49:7
х=7
4)х=8
5) 2 1/8-1 1/4= 2 1/8-1 2/8=1 9/8-1 1/8 =8/8=1