SGK Kết nối tri thức với cuộc sống - Trang 84
9 tháng 4 2023 lúc 21:28
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{42}\\{\,\,8}\end{array}}\\\hline{\,\,\,\,34}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{56}\\{\,\,\,9}\end{array}}\\\hline{\,\,\,\,47}\end{array}\)
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{60}\\{\,\,\,5}\end{array}}\\\hline{\,\,\,\,55}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{75}\\{\,\,\,6}\end{array}}\\\hline{\,\,\,\,69}\end{array}\)
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