71500 x 23 =
x-23/24 + x-23/25=x-23/26 + x-23/27
\(\dfrac{x-23}{24}\)+\(\dfrac{x-23}{25}\)=\(\dfrac{x-23}{26}\)+\(\dfrac{x-23}{27}\)
32 x 9 + 23 x 9 + 32 x 9 + 23 x 9 + 32 x 9 + 23 x 9 + 32 x 9 + 23 x 9 + 32 x 9 + 23 x 9 = ?
=32 x ( 9 + 9)
= 32 x 18
= 576
tính cho mình nhaHuỳnh Phương Khánh
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
Tính nhanh :
23 x 45 + 46 x 23 + 23 x 8 + 23
23 x 45 + 46 x 23 + 23 x 8 + 23
= 23 x 45 + 46 x 23 + 23 x 8 + 23 x 1
= 23 x (45 + 46 + 8 + 1)
= 23 x 100
= 2300
23x45+46x23+23x8+23=23x(45+46+8+1)=23x100=2300 k va kb voiminh nhe!
\(\frac{x-23}{24}+\frac{x-23}{25}=\frac{x-23}{26}+\frac{x-23}{27}\)
Giải:
Ta có: \(\frac{x-23}{24}+\frac{x-23}{25}=\frac{x-23}{26}+\frac{x-23}{27}\)
\(\Leftrightarrow\frac{x-23}{24}+\frac{x-23}{25}-\frac{x-23}{26}-\frac{x-23}{27}=0\)
\(\Leftrightarrow\left(x-23\right)\left(\frac{1}{24}+\frac{1}{25}-\frac{1}{26}-\frac{1}{27}\right)\)
\(\Leftrightarrow x-23=0\) (Vì \(\frac{1}{24}+\frac{1}{25}-\frac{1}{26}-\frac{1}{27}\) ≠ 0)
\(\Leftrightarrow x=23\)
Vậy nghiệm của phương trình là x = 23.
Chúc bạn học tốt@@
\(\frac{x-23}{24}+\frac{x-23}{25}=\frac{x-23}{26}+\frac{x-23}{27}\Leftrightarrow\left(x-23\right)\left(\frac{1}{24}+\frac{1}{25}-\frac{1}{26}-\frac{1}{27}\right)=0\Leftrightarrow x-23=0\Leftrightarrow x=23\)
Vậy $x=23$
23 x 14 + 23 x 16 + 20 x 23 + 50 x 23 = ?
Ai giúp mik vs mik tick cho
TL:
23 x 14 + 23 x 16 + 20 x 23 + 50 x 23
= 23 x ( 14 + 16 + 20 + 50 )
= 23 x 100
= 2300
- HT -
Ta có 23 x 14 + 23 x 16 + 20 x 23 + 50 x 23 = 23 x (14 + 16 + 20 + 50 ) = 23 x 100 = 2300
đáp án là 2300 nha
k cho mình nha
Tính nhanh :
23 + 23 x 2 + 23 x 3 + 23 x 4
246 x 2005 - 2005 x 148
25 x 12 x 30 x 4
23 + 23 x 2 + 23 x 3 + 23 x 4
= 23 x (1 + 2 + 3 + 4)
= 23 x 10
= 230
246 x 2005 - 2005 x 148
= (246 - 148) x 2005
= 98 x 2005
= 196490
25 x 12 x 30 x 4
= (25 x 4) x 12 x 30
= 100 x 360
= 36000
233 + 23 x 2 + 23 x 3 + 23 x 4
= 23 x ( 1 + 2 + 3 + 4 )
= 23 x 10
= 230
246 x 2005 - 2005 x 148
= ( 246 - 148 ) x 2005
= 98 x 2005
= 196490
25 x 12 x 30 x 4
= ( 25 x 4 ) x ( 12 x 30 )
= 100 x 360
= 36000