ВС=АВ+5,56=9,2+5,56=14,76
АС+ВС+АВ=27 это периметр
АС=27-ВС-АВ=27-9,2-14,76=3,04
1\3у+5\9=7,2
3\9у+5\9у=7,2
8\9у=7,2
у=72\10÷8\9=72\10×9\8=648\80=8 8\80=8,1
30 1/5 - 29 3/5 = 29 6/5 - 29 3/5 = 3/5
<span>3) 3/5
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18 - 17 9/10 = 17 10/10 - 17 9/10= 1/10
<span>1) Да
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<span>2 4/9 + 7 ( 5) /9= 10
</span>10 - 2 4/9 = 9 9/9 - 2 4/9 = 7 5/9
Ответ: стоит число 5
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1/3+1/3+1/3+1/3= <span>1 1/3
</span>1/3 + 1/3 + 1/3 + 1/3 = 2/3 + 1/3 + 1/3 = 3/3 + 1/3 = 1 + 1/3 = 1 1/3
<span>1) Да
</span>===============================
<span>12-х=2 1/4
</span>х=12 - 2 1/4
х= 11 4/4 - 2 1/4
х=9 3/4
<span> 4) 9 3/4</span>