|17-x|=4
4/9 x (-13/-17) + (-2/17) x 4/9 + 2/9 x 4/17 = ?
Lời giải:
$\frac{4}{9}\times \frac{-13}{-17}+\frac{-2}{17}\times \frac{4}{9}+\frac{2}{9}\times \frac{4}{17}$
$=\frac{4}{9}\times (\frac{13}{17}+\frac{-2}{17})+\frac{2}{9}\times \frac{4}{17}$
$=\frac{4}{9}\times \frac{11}{17}+\frac{4}{9}\times \frac{2}{17}$
$=\frac{4}{9}\times (\frac{11}{17}+\frac{2}{17})$
$=\frac{4}{9}\times \frac{13}{17}=\frac{52}{153}$
(5+8/17): x +(-4/17):x +(3+1/7) :(17+1/3) = 4/11
`(5+8/17):x+(-4/17):x+(3+1/7):(17+1/3)=4/11`
`(5+8/17)xx1/x-4/17xx1/x+22/7:52/17=4/11`
`(5+4/17)xx1/x+187/182=4/11`
`89/17xx1/x=-1329/2002`
`x=-118281/34034`
Số to quá ;-;
\(\left(5+\dfrac{8}{17}\right):x+\left(\dfrac{-4}{17}\right):x+\left(3+\dfrac{1}{17}\right):\left(17+\dfrac{1}{3}\right)=\dfrac{4}{11}\)
\(\left(\dfrac{93}{17}+\dfrac{-4}{17}\right):x+\dfrac{52}{17}:\dfrac{52}{3}=\dfrac{4}{11}\)
\(\dfrac{89}{17}:x+\dfrac{3}{17}=\dfrac{4}{11}\)
\(\dfrac{89}{17}:x=\dfrac{4}{11}-\dfrac{3}{17}\)
\(\dfrac{89}{17}:x=\dfrac{35}{187}\)
\(x=\dfrac{89}{17}:\dfrac{35}{187}\)
\(x=\dfrac{979}{35}\)
Mk thấy đề bài thế này mới đúng nếu sai thì nhắc mk nha!
-9/46-4 1/23:(3 1/4 - x:3/5)+2 8/23=1
(6 2/7*x + 3/7):2 1/5-3/7=-1
5 8/17:x+(-1/17):x +3 1/17:17 1/3=4/17
5 8/17 : x +(-4/17):x + 3 1/7 : 17 1/3= 4/11
Tìm x
1.-9/46 - 4/1/23 : (3/1/4 - x : 3/5) + 2/8/23=1
2.(6/2/7 * x +3/7) : 2/1/5 - 3/7=-1
3.5/8/17 : x + (-1/17) : x + 3/1/17 : 17/1/3=4/17
4.1/1 * 4 + 1/4 * 7 + 1/7 * 10 + ...+ 1/x(x + 3)=6/19
Tìm x:
a)5/8/17:x+(-4/17):x+3/1/7:17/1/3=4/11
b)|x|-5/3/7|x|-3/4=2|x|+(-8/7)
tìm x
5/8/17:x+(-4/17):x+3/1/7:17/1/3=4/11
Tính nhanh
A)(17/4 x 12/7 - 2/7 x 17/4 - 3/7 x 17/4) x 6/51
B)45 x 16 - 17/ 45 x 15 + 28
a(17/4x12/7-2/7x17/4-3/7x17/4)x6/51
=[17/4x(12/7-2/7-3/7)]x6/51
=17/4x1x6/51
=17/4x6/51
=102/204=1/2
b,45x16-17/45x15+28
=15x3x16-17/45x15+28
=15x48-17/45x15+28
=15x2160/45-17/45x15+28
=15x(2160/45-17/45)+28
=15x2143/45+28
=2143/3+84/3
=2227/3
tính nhanh à,lên google search í
(Người THÀNH CÔNG luôn có một lối đi riêng)
tìm x, biết : | x + 11/17 | + | x + 2/17 | + | x + 4/17 | = 4x
\(x+\frac{11}{17}+x+\frac{2}{17}+x+\frac{4}{17}=4x\)
\(\Rightarrow3x+1=4x\)
\(\Rightarrow x=1\)
Vì vế trái >=0 => vế phải >=0 => x>=0
Khi đó ta có: \(x+\frac{11}{17}+x+\frac{2}{17}+x+\frac{4}{17}=4x\)
=> \(3x+1=4x\)
=> \(x=1\)
12 ? 3 = 4 x 4 = ? + 16 = ? + 17 + 17 + 17 = ?
12 : 3 = 4 x 4 = 16 + 16 = 32 + 17 + 17 + 17 = 83