![](https://rs.olm.vn/images/avt/0.png?1311)
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{63}\\{20}\end{array}}\\\hline{\,\,\,\,43}\end{array}\) \(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{35}\\{15}\end{array}}\\\hline{\,\,\,\,20}\end{array}\)
\(\begin{array}{*{20}{c}}{c)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{78}\\{52}\end{array}}\\\hline{\,\,\,\,26}\end{array}\) \(\begin{array}{*{20}{c}}{d)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{97}\\{\,\,\,6}\end{array}}\\\hline{\,\,\,\,91}\end{array}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Vì tất cả các số hạng khi nhân với 0 đều có kết quả là 0. Vậy kết quả của phép tính trên là 0.
![](https://rs.olm.vn/images/avt/0.png?1311)
Phần đầu mình không biết
x= 78-56
x= 22
x= 56-56
x=0
tk nha@@@@@@@@@@@@@@@@@@@
k cho minh di xong minh k lai cho bn nhanh thi dc nhe
a hihihihi
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hhhhhhhhhhhhhhh
bbbbbbbbbbbbbbbbbbb
eeeeeeeeeeeeeeeeeee
wwwwwwwwwwwwwwwwwwww
vvvvvvvvvvvvvvvvvvvv
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cccccccccccccccccccccccc
![](https://rs.olm.vn/images/avt/0.png?1311)
x+12=100-78
x+12=22
x=22-12
x=10
x-12=100-78
x-12=22
x=22+12
x=34
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
78-52=26
k mik mik k lại
78-52=26