89-89+63-63+2=
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(-\left|x-6\right|=\left(63-\left|-176\right|+89\right)-\left(63+89\right)\)
\(-\left|x-6\right|=\left(63-176+89\right)-63-89\)
\(-\left|x-6\right|=\left(63-63\right)+\left(89-89\right)+\left(-176\right)\)
\(-\left|x-6\right|=-176\)
\(\left|x-6\right|=176\)
\(\Rightarrow\orbr{\begin{cases}x-6=176\\x-6=-176\end{cases}\Rightarrow\orbr{\begin{cases}x=182\\x=-170\end{cases}}}\)
\(\Rightarrow x\in\left\{-170;182\right\}\)
\(-\left|x-6\right|=\left(63-\left|-176\right|+89\right)-\left(63+89\right)\)
\(\Rightarrow-1.\left|x-6\right|=\left(63-176+89\right)-\left(63+89\right)\)
\(\Rightarrow-1.\left|x-6\right|=-24-152\)
\(\Rightarrow-1.\left|x-6\right|=-176\)
\(\Rightarrow\left|x-6\right|=-176:\left(-1\right)\)
\(\Rightarrow\left|x-6\right|=176\)
+ TH1:
\(x-6=176\)
\(\Rightarrow x=182\)
+ TH2:
\(x-6=-176\)
\(\Rightarrow x=-170\)
Vậy x = 182 hoặc x =-170
Chúc bạn học tốt !
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{35}\\{\,\,\,6}\end{array}}\\\hline{\,\,\,\,41}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{47}\\{\,\,8}\end{array}}\\\hline{\,\,\,55}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{89}\\{\,\,2}\end{array}}\\\hline{\,\,\,91}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{63}\\{\,\,9}\end{array}}\\\hline{\,\,\,72}\end{array}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có \(\hept{\begin{cases}A+B+B+B=89\\A+A+B=63\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}A+3B=89\\2A+B=63\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}2A+6B=178\\2A+B=63\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}5B=115\\2A+B=63\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}B=23\\2A+23=63\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}B=23\\2A=40\end{cases}}\)
\(\Leftrightarrow\hept{\begin{cases}B=23\\A=20\end{cases}}\)
Vậy \(A+B=20+23=43\)
![](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)
trả lời:
39+47-63+97-18= 102
320-34+65-23= 328
456-89+45-65+14= 361
![](https://rs.olm.vn/images/avt/0.png?1311)
a.251001
b.8281
c.998001
d.7921
e.249999
f.8096
g.10000
h.1080
=2 k nha
89-89+63-63+2=0+0+2=2