tim x: x+123<246
Tim X
X+123=321
X+123=321
X=321-123
X=198
Chúc bạn học tốt!
x+123 bằng 321
x bằng 321- 123
x bằng 198
123*X+128*X+1996=16052
TIM X?
< = > 251x + 1996 = 16052
251x = 16052 - 1996 = 14056
x = 14056/251 = 56
x*(123+128)=16052-1996
x*251=14056
x=14056:251
x=56
123*X+128*X+1996=16052
=> (123+128)*X=16052-1996
<=> 251*X=14056
=> X=14056/251
<=> X=56
tim x
2x-123+x=12
2x-123+x=12
=> x.(2-1)-123=12
=>x-123=12
=>x=12+123
=>x=135
2x-123+x=12
=> 3x-123=12
=> 3x=12+123
=> 3x=135
=> x=135:3
=> x=45
tim x biet:
123+x=321
123 + x = 321
x = 321 - 123
x = 198
198 nha bạn k cho mình với kết bạn với mình nữa nha
tim x
X x 3 = 123 300:x=60
X x 3=123
x = 123 :3
x = 41
Suy ra x =41
300 : x =60
x = 300:60
x = 5
Suy ra x =5
Cau 3 (2 diem). Tim so tu nhien x, biet:
a. 123 - x =38
b. (x+15) - 7 =33
c. 3x+3 - 13=230
`123-x=38`
`=> x= 123-38`
`=>x=85`
Vậy `x=85`
__
`(x+15) -7=33`
`=>x+15=33+7`
`=>x+16= 40`
`=>x=40-16`
`=>x=24`
Vậy `x=24`
__
`3^(x+3) -13=230`
`=> 3^(x+3) = 230+13`
`=>3^(x+3)=243`
`=> 3^(x+3)=3^5`
`=> x+3=5`
`=>x=5-3`
`=>x=2`
Vậy `x=2`
x/y=y/z=z/x tim N=x123.y456/2579
tim x
123+x+2x=2x+345-236
1324+x+x=125-2x-3x
123+x+2x=2x+345-236
<=>x+2x-2x=345-236-123
<=>x=-14
vậy x=-14
1324+x+x=125-2x-3x
<=>x+x-2x-3x=125-1324
<=>-3x=-1199
<=>x=\(\frac{1999}{3}\)
vậy x=\(\frac{1999}{3}\)
k mk nha mấy bạn
\(123+x+2x=2x+345-236\)
\(\Leftrightarrow2x+345-236-2x-x=123\)
\(\Leftrightarrow109-x=123\)
\(\Leftrightarrow x=-14\)
tim x
2193 : {[( 2223 -18x ) : 135 ] +123} + 1996= 2013
2193: {[( 2223 - 18x): 135] + 123} + 1996 = 2013
____ _______________________ = 2013 - 1996 = 17
[( 2223 - 18x) : 135] +123 = 2193: 17 = 129
(2223 - 18x) : 135 = 129 - 123 = 3
2223 - 18x = 135.3 = 405
18x = 2223 - 405 = 1818
x = 1818: 18 = 101
Vậy x = 101
tíc nha!
tim x
2193 : {[( 2223 -18x ) : 135 ] +123} + 1996 = 2013
2193 : [( 2223 - 18x ) : 135] +123 = 17
2193 : (2223 - 18x ) : 135 = 140
2193: (2223 - 18x ) = 18900
2223 - 18x = ???
chắc là mình làm sai rồi