Ответ:
1. 54×Х+960=3120
Х=(3120–960):54
Х=40
7800:(Х–7)=78
Х=7800:78+7
Х=107
2. 7020:90>5030–4961
3. 1) 11860см–6270см=49590см
2)
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Ответ:
1. 54×Х+960=3120
Х=(3120–960):54
Х=40
7800:(Х–7)=78
Х=7800:78+7
Х=107
2. 7020:90>5030–4961
3. 1) 11860см–6270см=49590см
2)