Xx4:2=9474
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\(\frac{3x}{2}+396=9474\Leftrightarrow\frac{3x}{2}=9078\Leftrightarrow3x=18156\Leftrightarrow x=6052\)
k mk nhé
\(x\times\frac{3}{2}+396=9474\)
\(x\times\frac{3}{2}=9078\)
\(x=6052\)
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 4 - 2 = 22
X x 4 = 22 + 2
X x 4 = 24
X = 24 : 4
X = 6
đúng nha !
![](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)
\(x^4+x^3-27x-27=0\)
\(\Leftrightarrow x^3\left(x+1\right)-27\left(x+1\right)=0\)
\(\Leftrightarrow\left(x+1\right)\left(x^3-27\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x+1=0\\x^3=3^3\end{matrix}\right.\)
\(\Leftrightarrow\left[{}\begin{matrix}x=-1\\x=3\end{matrix}\right.\)
![](https://rs.olm.vn/images/avt/0.png?1311)
X = 32 vì X x 4 + X x 7 = X x (4+7) = X x 11 = 352
X= 352 : 11
X = 32
\(x\times4+x\times7=352\)
\(x\times\left(4+7\right)=352\)
\(x\times11=352\)
\(x=352:11\)
\(x=32\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Xx4+Xx7+Xx9=40300
X x ( 4 + 7 + 9 ) = 40300
X x 20 = 40300
X = 40300 : 20
X = 2015
![](https://rs.olm.vn/images/avt/0.png?1311)
45 - 4x + 15 = 35
=> -4x = 35 - 45 - 15
=> -4x = -25
=> x = -25/-4
=> x = 25/4
vậy_
45 - 4 × x + 15 = 36
45 - 4 × x = 36 - 15
45 - 4 × x = 21
4 × x = 45 - 21
4 × x = 24
x = 24 : 4
x = 6
Vậy x = 6
![](https://rs.olm.vn/images/avt/0.png?1311)
( X x 2 + 3 + 4 + 1 ) = 2130
X x 10 = 2130
X = 2130 : 10
X = 213
Xx2+Xx3+Xx4+X=2130
Xx(2+3+4+1) =2130
Xx10 =2130
X =2130:10
X =213
X x 4 = 9474 x 2
X x 4 = 18948
X = 18948 : 4
X = 4737
X x 4 : 2 = 9474
X x 4 = 9474 x 2
X x 4 = 18948
X = 18948 : 4
X = 4737