2^3 . x + 2010^0 . x = 995 - 15 : 3
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23 . x + 20020 . x = 995 - 15 :3
8 . x + 1 . x = 995 - 5
x . ( 8 + 1 ) = 990
x . 9 = 990
x = 990 : 9
x = 110
tích cho mik nha
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![](https://rs.olm.vn/images/avt/0.png?1311)
23 . x + 20160 . x = 995 - 15 : 3
=> 8 . x + 1 . x = 995 - 5
=> x . (8 + 1) = 990
=> x . 9 = 990
=> x = 990 : 9
=> x = 110
Vậy x = 110.
![](https://rs.olm.vn/images/avt/0.png?1311)
a/ \(\left(x-23\right):14+25=42-1^{2002}\)
\(\Leftrightarrow\left(x-23\right):14+25=42-1\)
\(\Leftrightarrow\left(x-23\right):14+25=41\)
\(\Leftrightarrow\left(x-23\right):14=16\)
\(\Leftrightarrow x-23=192\)
\(\Leftrightarrow x=215\)
Vậy ....
b/ \(2^3.x+2002^0.x=995-15:3\)
\(\Leftrightarrow8.x+1.x=995-5\)
\(\Leftrightarrow x\left(8+1\right)=990\)
\(\Leftrightarrow9x=990\)
\(\Leftrightarrow x=110\)
Vậy ...
b/ \(x+2x+3x+.........+9x=459-3^2\)
\(\Leftrightarrow x\left(1+2+......+9\right)=459-9\)
\(\Leftrightarrow x.\dfrac{\left(9+1\right).\left[\left(9-1\right):1+1\right]}{2}=450\)
\(\Leftrightarrow x.45=450\)
\(\Leftrightarrow x=10\)
Vậy ...
![](https://rs.olm.vn/images/avt/0.png?1311)
Lời giải:
$8\times x+x=995-15:3$
$x\times (8+1)=995-5$
$x\times 9=990$
$x=990:9=110$
Ta có: 23.x+20100.x=995-15:3
\(\Leftrightarrow\) x.(23+20100)=995-5
\(\Leftrightarrow\) x.(8+1)=990
\(\Leftrightarrow\)x.9=990
\(\Leftrightarrow x=990:9=110\)
Vậy:.............
x=110