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1 + 7 * 5 - 9 + \(\frac{65}{9}\)= 1 + 35 - 9 + \(\frac{65}{9}\)= 36 -9 + \(\frac{65}{9}\) = 27 + \(7\frac{2}{9}\)= \(34\frac{2}{9}\)
Chắc đúng , k mình nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
lấy máy tính tự tính cx đc mà, đăng ra làm chi cho tốn calo gõ máy
![](https://rs.olm.vn/images/avt/0.png?1311)
12+99+88+1+35+24+65+76
=(12+88)+(99+1)+(35+65)+(24+76)
=100+100+100+100
=400
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\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{47}\\{43}\end{array}}\\\hline{\,\,\,90}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{43}\\{47}\end{array}}\\\hline{\,\,\,90}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{65}\\{28}\end{array}}\\\hline{\,\,\,\,93}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{28}\\{65}\end{array}}\\\hline{\,\,\,93}\end{array}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1 + 65
=66
1+65
=66
k nha