4800:(x*16)=
Tìm x:
4800: (x × 16) = 25
4800: ( x x 16) = 25 x x 16 = 4800 : 25 x x 16 = 192 x = 192 : 16 x = 12 |
4800 : (x . 16) = 15
4800 : ( X x 16 ) = 15.
X x 16 = 4800 : 15.
X x 16 = 320.
X = 320 : 16.
X = 20.
Kích mình nha!!!
4800:(x.16)=15
x.16= 4800:15
x.16= 320
x= 320:16
x=20
4800:(x.16)=15
x.16=4800:15
x.16=320
x=320:16
x=20
Chúc mừng năm mới
4800:[x nhan 16]=25
Đề bài : 4800 : ( x * 16 ) = 25
Đáp án của mình là : 12
4800:{ x*16} =25
4800 : ( X x 16 ) = 25
X x 16 = 4800 : 25
X x 16 = 192
X = 192 : 16
X = 12
2009 : ( 71 : x ) = 2009
71 : x = 2009 : 2009
71 : x = 1
x = 71 : 1
x = 71
4800 : ( x . 16 ) = 25
x . 16 = 4800 : 25
x . 16 = 192
x = 192 : 16
x = 12
4800 : ( X x 16 ) = 25
X x 16 = 4800 : 25
X x 16 = 192
X = 192 : 16
X = 12
4800 : ( x nhan 16 ) = 25
2009 : ( 71 : x ) = 2009
\(a,4800:\left(x\times16\right)=25\)
\(x\times16=4800:25\)
\(x\times16=192\)
\(x=192:16\)
\(x=12\)
\(b,2009:\left(71:x\right)=2009\)
\(71:x=2009:2009\)
\(71:x=1\)
\(x=71\)
a,4800[x nhân 16]=25 b,2009:[71:x]=2009
x nhân 16=4800:25 71:x=2009:2009
x nhân 16=192 71:x=1
x=192:16 x=71:1
x=12 x=71
\(\dfrac{4800}{x}-\dfrac{4800}{x+100}=8\)
giải pt
ĐK: ` x\ne 0; x \ne -100`
`4800/x-4800/(x+100)=8`
`<=>1/x-1/(x+100) =1/600`
`<=> (x+100-x)/(x(x+100) = 1/600`
`<=> 100/(x(x+100))=1/600`
`<=> x^2+100x = 60000`
\(\left[{}\begin{matrix}x=200\\x=-300\end{matrix}\right.\)
Vậy...
`4800/x-4800/(x+10)=8`
`ĐK:x ne 0,x ne -10`
`pt<=>600/x-600/(x+10)=1`
`<=>(600x+6000-600x)/(x^2+10x)=1`
`<=>6000/(x^2+10x)=1`
`<=>x^2+10x=6000`
`<=>x^2+10x-6000=0`
`Delta'=25+6000=6025`
`<=>x_1=20,x_2=-30`
X x 3 + X x 5 = 4800
Xx(3+5)=4800
Xx8=4800
X=4800:8
X=600
Vậy X=600
48 x X -96 = 4800
48 x X = 4896
X = 4896 : 48
X = 102
48 x X - 96 = 4800
48 x X = 4800 + 96 = 4896
X = 4896 : 48 = 102
tìm x 4800:(x*4)=8