23+0=
23 + 23 + 23 - 23 - 46 x 0 + 412 = ?
23+23+23-23-46x0+412
=23x3-23-0+412
=69-23+412
=46+412
=458.
23 + 23 + 23 - 23 - 46 x 0 + 412
= 46 + 23 - 23 - 0 + 412
=46 + 0 - 0 + 412
=46 + 412
=458
23 + 23 + 23 - 23 - 46 x 0 + 412
= 23 + 23 + 23 - 23 - 0 + 412
= 46 + 0 - 0 + 412
= 46 + 412
= 458
ai tk mk mk tk lại cho .
|1-\(\sqrt{23}\)|+23-\(\sqrt{23}\)-\(\left|-2023\right|^0\)
Lời giải:
$|1-\sqrt{23}|+23-\sqrt{23}-|-2023|^0=\sqrt{23}-1+23-\sqrt{23}-1$
$=23-2=21$
a) \(\frac{x-23}{24}+\frac{x-23}{25}=\frac{x-23}{26}+\frac{x-23}{27}\)
\(\Leftrightarrow\frac{x-23}{24}+\frac{x-23}{25}-\frac{x-23}{26}-\frac{x-23}{27}=0\)
\(\Leftrightarrow\left(x-23\right)\left(\frac{1}{24}+\frac{1}{25}-\frac{1}{26}-\frac{1}{27}\right)=0\)
\(\Leftrightarrow x-23=0\)( vì \(\frac{1}{24}+\frac{1}{25}-\frac{1}{26}-\frac{1}{27}\ne0\))
\(\Leftrightarrow x=23\)
Vậy nghiệm của pt x=23
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= ………
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= ………+ ……..
= 0.
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= …0+0=0……
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= …1……+ (-1)……..
= 0.
a) 23 + (-77) + (-23) + 77 =
[23 + (-23)] + [(-77) + 77]
= …0+0=0……
b) (-2 020) + 2 021 + 21 + (-22)
=[(-2 020) + 2 021] + [21 + (-22)]
= …1……+ (-1)……..
= 0.
a) x.0=0
b) 23(x-4)=23
c) 12x+ 40= 76
Lê Hoàng Khả Nhi
a, x.0 = 0
=> x = 0
b, 23( x -4) = 23
=> x -4 = 23/23
=> x -4 = 1
=> x = 1 + 4
=> x = 5
c, 12x + 40 = 76
=> 12x = 76 -40
=> 12x = 36
=> x = 36/12
=> x = 3
a) \(x.0=0\)
\(=>x\)có vô số nghiệm
b) \(23\left(x-4\right)=23\)
\(23x-92=23\)
\(23x=115\)
\(x=5\)
vậy \(x=5\)
c) \(12x+40=76\)
\(12x=36\)
\(x=3\)
vậy \(x=3\)
a) x.0=0
=> x \(\varepsilon\)N
b) 23(x-4)=23
x-4 = 23-23
x-4 =0
x = 0+4
x = 4
c) 12x +40=76
12x = 76-40
12x = 36
x = 36:12
x = 3
Ung ho mk nha cac bn!
(x -45).27=0
23.(42-x)=23
(x -45).27=0 23.(42-x)=23
(x-45) =0:27 42-x =23:23
(x-45) =0 42-x=1
x =0+45 x=42-1
x = 45 x=41
( x - 45 ) . 27 = 0
( x - 45 ) = 0 : 27
x - 45 = 0
x = 0 + 45
x = 45
23 . ( 42 - x ) = 23
( 42 - x ) = 23 : 23
42 - x = 1
x = 42 - 1
x = 41
(x -45).27=0
23.(42-x)=23
( x - 45 ) . 27 = 0
( x - 45 ) = 0 : 27
x - 45 = 0
x = 0 + 45
x = 45
23 . ( 42 - x ) = 23
( 42 - x ) = 23 : 23
42 - x = 1
x = 42 - 1
x = 41
cho hàm số y=f(x)=13x2−113x2−1 thì
A.f(0)=−23−23 B.f(-1)= -1 C.f(3)=-1 D.f(-1)=−23
a)(x-45)*27=0
b)23*(42-x)=23
x-45=0/27=0
x=0+45=45
b)42-x=23/23=1
x=42-1=41
k nh
Cứu
x-15/23+x-23/15-2=0
\(\frac{x-15}{23}+\frac{x-23}{15}-2=0\)
\(\Leftrightarrow\left(\frac{x-15}{23}-1\right)+\left(\frac{x-23}{15}-1\right)=0\)
\(\Leftrightarrow\frac{x-38}{23}+\frac{x-38}{15}=0\)
\(\Leftrightarrow\left(x-38\right)\left(\frac{1}{23}+\frac{1}{15}\right)=0\Rightarrow x-38=0\Leftrightarrow x=38\)