123 + 123 + 23 + 12 =?
12 x 4 =?
12 ? 3 = 4 x 4 = ?
20 x 3 = ?
90 x 1 = ?
123 - 123 = ?
10 x 9 = ? / 9 = ?
12 - 9 = ? x 9 = ?
23 - 5 = ?
123 + 12 = ?
1000 - 200 = ?
333 - 111 = ?
12 : 3 = 4 x 4 = 16
20 x 3 = 60
90 : 1 = 90
123 - 123 = 0
10 x 9 = 90 : 9 = 10
12 - 9 = 3 x 9 = 27
23 - 5 = 18
123 + 12 = 135
1000 - 200 = 800
333 - 111 = 222
\(20.3=60\)
\(90.1=90\)
\(123-123=0\)
\(10.9=\frac{810}{9}=90\)
\(23-5=15\)
\(123+12=135\)
\(1000-200=800\)
\(333-111=222\)
( 123 x 456 - 23 x 16 ) x ( 12 x 9 -4 x 27 )
( 123 . 456 - 23 . 16 ) . ( 12 . 9 - 4 . 27)
= ( 56088 - 368) . ( 108 - 108 )
= 55720 . 0
= 0
( 123 x 456 - 23 x 16 ) x ( 12 x 9 -4 x 27 )
=( 123 x 456 - 23 x 16 ) x (108 -108)
=( 123 x 456 - 23 x 16 ) x 0=0
( 123 x 456 - 23 x 16 ) x ( 12 x9 - 4 x 27 ) = ( 123 x 456 - 23 x 16 ) ( x 108 - 108 )
= 557 / 0
= 0
Chúc bạn học tốt Kane thân mến !
( 123 x 456 -23 x46 ) x ( 12 x 9 - 4 x 27 )
(123x456-23x46)x(12x9-4x27)
=.......x.....
=0
( 123 * 456 - 23 * 46) * (12 * 9 - 4 * 27) = 55030 * 0
= 0.
( 123 . 456 - 23 . 46 ) . ( 12 . 9 - 4 . 27)
= ( 123 . 456 - 23 . 46 ) . ( 108 - 108 )
= ( 123 . 456 - 23 . 46 ) . 0
= 0
(1/3+3/4-13/12):(12/23+123/234+1234/2345)
123 + 123 + 12 + 23 =?
12 + 34 - 2 =?
tick mk , mk tick lại
\(123+123+12+23=281\)
\(12+34-2=44\)
K mình nha mình sẽ k bạn thề luôn!
123 + 123 + 12 + 23
= 123 x 2 + 35
= 281
123 + 23 =?
12 : 4 =?
123 + 23 = 146
12 : 4 = 3
k mk nha ,mk đang bị âm 23 điểm hỏi đáp tuần ấy huhu...
tìm x
|x+23|^2002+|y-12|^123=0
|x+23|^2002|+|y-12|^123=0
<=>|x+23|^2002\(\ge\) 0
\(\left|y-12\right|^{^{123}}\ge0\)
=>\(\left|x+23\right|^{2002}+\left|y-12\right|^{123}\ge0\)
=>x+23=0=>x=-23
=>y-12=0=>y=12
\(\left|x+23\right|^{2002}+\left|y-12\right|^{123}=0\)
\(\Rightarrow\hept{\begin{cases}\left|x+23\right|^{2002}=0\\\left|y-12\right|^{123}=0\end{cases}}\Rightarrow\hept{\begin{cases}x+23=0\\y-12=0\end{cases}}\Rightarrow\hept{\begin{cases}x=-23\\y=12\end{cases}}\)
Vậy \(x=-23;y=12\)
Vì \(\left|x+23\right|^{2002}\ge0;\left|y-12\right|^{123}\ge0\forall x;y\)
\(\Rightarrow\left|x+23\right|^{2002}+\left|y-12\right|^{123}\ge0\forall x;y\)
Mà đề lại cho \(\left|x+23\right|^{2002}+\left|y-12\right|^{123}=0\)
\(\Leftrightarrow\left|x+23\right|^{2002}=0;\left|y-12\right|^{123}=0\)
\(\Rightarrow x=-23;y=12\)
điền dấu <>=
12+23...23:23 13-6...23
123-123...22-22 90-3...24
\(12+23>23:23\)
\(123-123=22-22\)
\(13-6< 23\)
\(90-3>24\)
12+23>23:23 13-6<23
123-123=22-22 90-3>24
.
Trả lời:
12 + 23 > 23 : 23
123 - 123 = 22 - 22
13 - 6 < 23
90 - 3 > 24
a)-6/35 :-54/39
b)-5/7x2/11+-5/7x9/11+12/7
c)(1/2+3/4-13/12) :(12/23+123/234+1234/2345)
a: =6/35x39/54=13/105
b: \(=\dfrac{-5}{7}\left(\dfrac{2}{11}+\dfrac{9}{11}\right)+\dfrac{12}{7}=\dfrac{-5}{7}+\dfrac{12}{7}=1\)