1) х+2 1/3=7
х+7/3=7
х=7-7/3
х= 14/3.
2) х-2 1/3=7
х-7/3=7
х= 7+7/3
х= 28/3.
3) х:2 1/3= 7
х:7/3=7
х×3/7=7
х= 49/3.
4) 2 1/3х= 7
7/3х= 7
х=3.
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Answers & Comments
1) х+2 1/3=7
х+7/3=7
х=7-7/3
х= 14/3.
2) х-2 1/3=7
х-7/3=7
х= 7+7/3
х= 28/3.
3) х:2 1/3= 7
х:7/3=7
х×3/7=7
х= 49/3.
4) 2 1/3х= 7
7/3х= 7
х=3.