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

Toán Lớp 7: (x + 4) . (y + 5) = 18 Cần kết quả. Giải thích càng tốtt

Toán Lớp 7: (x + 4) . (y + 5) = 18
Cần kết quả. Giải thích càng tốtt

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    (x + 4) . (y + 5) = 18$\\$=>(x + 4), (y + 5)\inƯ(18)={+-1;+-2;+-3;+-6;+-9;+-18}$\\$\text{ta có bảng:}\begin{array}{|c|c|c|}\hline \text{x+4}&\text{1}&\text{-1}&\text{2}&\text{-2}&\text{3}&\text{-3}&\text{6}&\text{-6}&\text{9}&\text{-9}&\text{18}&\text{-18}\\\hline\text{y+5}&\text{18}&\text{-18}&\text{9}&\text{-9}&\text{6}&\text{-6}&\text{3}&\text{-3}&\text{2}&\text{-2}&\text{1}&\text{-1}\\\hline\text{x}&\text{-3}&\text{-4}&\text{-2}&\text{-6}&\text{-1}&\text{-7}&\text{2}&\text{-10}&\text{5}&\text{-13}&\text{14}&\text{-22}\\\hline \text{y}&\text{13}&\text{-23}&\text{4}&\text{-14}&\text{1}&\text{-11}&\text{-2}&\text{-8}&\text{-3}&\text{-7}&\text{-4}&\text{-5}\\\hline\end{array}

  2. Giải đáp + Lời giải và giải thích chi tiết:
     (x+4).(y+5)=18 
    Ta có bằng sau 
    \begin{array}{|c|c|c|}\hline \text{x+4}&\text{6}&\text{3}&\text{-6}&\text{-3}&\text{9}&\text{2}&\text{-9}&\text{-2}\\\hline \text{y+5}&\text{3}&\text{6}&\text{-3}&\text{-6}&\text{2}&\text{9}&\text{-2}&\text{-9}\\\hline \text{x}&\text{2}&\text{-1}&\text{-10}&\text{-7}&\text{5}&\text{-2}&\text{-13}&\text{-6}\\\hline \text{y}&\text{-2}&\text{1}&\text{-8}&\text{-11}&\text{-3}&\text{4}&\text{-7}&\text{-14}\\\hline\end{array}
    Chúc bạn học tốt cho  mik 5 sao và Câu trả lời hay nhất nha 

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

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