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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: 2,5/7,5=9x/7 x-2/2=8/x-2 6/x-3=7/x-5

Toán Lớp 7: 2,5/7,5=9x/7
x-2/2=8/x-2
6/x-3=7/x-5

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222-9+11+12:2*14+14 = ? ( )