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\(x\times98+x:0,5=2017\)
\(x\times98+x\times2=2017\)
\(x\times\left(98+2\right)=2017\)
\(x\times100=2017\)
\(x=2017:100\)
\(x=20,17\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(x.98:0,5=2017\)
\(x.98=2017.0,5\)
\(x.98=1008,5\)
\(x=1008,5:98\)
\(x=10,29\)
![](https://rs.olm.vn/images/avt/0.png?1311)
X*98+X:0,5=2017
X*98+X:1/2=2017
X*98+X*2=2017
X*(98+2)=2017
X*100=2017
X =2017:100
X =20,17
X * 98 + X : 0,5 = 2017
X * 98 + X : 1/2 = 2017
X * 98 + X * 2 = 2017
X * ( 98 + 2 ) = 2017
X * 100 = 2017
X = 2017 : 100
X = 20,17
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(3\left(2-x\right)+5\left(x-6\right)=98\)
\(\Rightarrow6-3x+5x-30=98\)
\(\Rightarrow\left(6-30\right)+\left(-3x+5x\right)=98\)
\(\Rightarrow-24+2x=98\)
\(\Rightarrow2x=98-\left(-24\right)\)
\(\Rightarrow2x=122\)
\(\Rightarrow x=122:2\)
\(\Rightarrow x=61\)
Vậy x = 61
b) \(3x-2=2x-3\)
\(\Rightarrow3x-2x=2-3\)
\(\Rightarrow x=-1\)
Vậy x = -1
c) \(\left(x-7\right)\left(x^3-8\right)=0\)
\(\Rightarrow\orbr{\begin{cases}x-7=0\\x^3-8=0\end{cases}}\Rightarrow\orbr{\begin{cases}x-7=0\\x^3=8\end{cases}}\Rightarrow\orbr{\begin{cases}x=7\\x=2\end{cases}}\)
Vậy x = 7 hoặc x = 2
_Chúc bạn học tốt_
a.6-3X+5X-30=98
2X-24=98
2X=74
X=37
b.3X-2X=2-3
X=-1
c.X-7=0 X=7
X^3-8=0 X=2
x.98+x.2=2017
x(98+2)=2017
100x=2017
x=20,17
X x 98 + X x 2 = 2017
X x (98 + 2) = 2017
X = 2017 : 100
X = 20,17