23+2 - 41
L = 3/21 + 3/41 - 3/61 / 9/21 + 9/41 - 9/61 - 11/35 - 11/10 - 11/23 / 2/35 - 2/10 - 2/23
tìm x thuộc z: 27/23+-4/23+1/2+-4/8<x<7/3+13/41+28/41
\(\frac{27}{23}+\frac{-4}{23}+\frac{1}{2}+\frac{-4}{8}< x< \frac{7}{3}+\frac{13}{41}+\frac{28}{41}\)
\(\Rightarrow\frac{27}{23}-\frac{4}{23}+\frac{1}{2}-\frac{4}{8}< x< \frac{7}{3}+\frac{13}{41}+\frac{28}{41}\)
\(\Rightarrow1+0< x< \frac{7}{3}+\frac{3}{3}\)
\(\Rightarrow1< x< \frac{10}{3}\)
\(\Rightarrow1< x< 3,333333333\)
\(\Rightarrow x\in\left\{2;3\right\}\)
Vậy : ....
ta co : \(\frac{27}{23}+\frac{-4}{23}+\frac{1}{2}+\frac{-4}{8}< x< \frac{7}{3}+\frac{13}{41}+\frac{28}{41}\)
=> \(1< x< \frac{10}{3}\)
vi x la so nguyen => \(1< x\le3\)
con lai ban tu lam
thực hiện phép tính :
a, -1/2 + 19/23+ -9/2+ 4/23 +3 /-6
b. 5/13+ -5/7 +-20/41 + 8/13 +-21/41
c.-5/7 x 19/41 + 5/7 x -21/41 + 5/7
d. 7/3 +1/2 - -3/70
Đây là phân số
A=((2-2/19+2/23-1/1010)/(3-3/19+3/23-3/2020))x((4-4/29+4/41-1/505)/(5-5/29+5/41-1/404))
giúp mình với
2/15-2/65-4/39
32/13-(7/23+8/23)
(1/3+12/67+13/41) - (79/67 - 28/41)
38/45 - (8/45-17/51-3/11)
2/15-2/65-4/39=4/39-4/39=0
32/13-(7/23+8/23)=32/13-15/23=541/299
(1/3+12/67+13/41) - (79/67 - 28/41)=6836/8241-1363/2747=1/3
38/145 - (8/45-17/51-3/11)=38/145-(-212/495)=1982/2871
(2+x)^3-23=41
( x + 2 )3 = 41 + 23
( x + 2 )3 = 64
( x + 2 )3 = 43
=> x + 2 = 4
x = 4 - 2
x = 2
Vậy x =2
\(\left(2+x\right)^3-23=41\\ \left(2+x\right)^3=64\\ 2+x=4\\ x=2\)
(2+x)\(^3\)-23=41
\(\left(2+x\right)^3-23=41\)
\(\Rightarrow\left(2+x\right)^3=64\)
\(\Rightarrow\left(2+x\right)^3=4^3\)
\(\Rightarrow2+x=4\)
\(\Rightarrow x=2\)
\(=>8.x^3-23=41\)
\(8.x^3=41+23=64\)
\(x^3=8\)
\(=>x=2\)
(2+x)3−23=41
( x + 2 )3 = 41 + 23
( x + 2 )3 = 64
( x + 2 )3 = 43
=> x + 2 = 4
x = 4 - 2
x = 2
(2+x)mũ 3 -23= 41
( 2 + x )3 - 23 = 41
( 2 + x )3 = 64 = 43
=> 2 + x = 4
x = 2
\(\left(2+x\right)^3-23=41\\ \Rightarrow\left(2+x\right)^3=64\\ \Rightarrow2+x=4\\ \Rightarrow x=2\)