tim x,biet
1) 135 +(121-x) = 231
2) x - 32 chia 16 = 48
tim x biet x-32 chia 16=48 x=
X =
tim x biet (x-32):16=48
(x - 32) : 16 = 48
x - 32 = 48 x 16
x - 32 = 768
x = 768 + 32
x = 800
Tìm số tự nhiên x biết:
a) x - 32 : 16 = 48 b) 88 - 3 . 7 + x = 64
c) 5 + 4 x : 3 - 121 : 11 = 4 d) 15 - 2 3 x + 1 = 11 . 13 - 130
Tìm số tự nhiên x biết:
a) x – 32 : 16 = 48
b) 88 – 3.(7+x) = 64
c) (5+4x) : 3 – 121 : 11 = 4
d) 15 – 2(3x+1) = 11.13 – 130
a) x – 32 : 16 = 48 ó x – 2 = 48 ó x = 48 + 2 ó x = 50
b) 88 – 3.(7+x) = 64 ó 3.(7+x) = 88 – 64 ó 7 + x = 24:3 ó x = 8 – 7 ó x = 1
c) (5+4x) : 3 – 121 : 11 = 4 ó (5+4x) : 3 – 11 = 4 ó (5+4x) : 3 = 4 + 11 ó 5+4x = 15.3 ó 4x = 45 – 5 ó 4x = 40 ó x = 10
d) 15 – 2(3x+1) = 11.13 – 130 ó 15 – 2(3x+1) = 143 – 130 ó 15 – 2(3x+1) = 13
ó 2(3x+1) = 15 – 13 ó 3x + 1 = 2:2 ó 3x = 1 – 1 ó 3x = 0 ó x = 0
tim x:
a, x/4 + x/8 + x/16 + x/32 + x/64 + x/178=63/128
b, x* (2/5+2/15+2/125+2/135+2/405)=424/405
Tim x :
a) -121-( -35 - x) =50
b) 17 + x - (352 - 400) = -32
c)2130 - ( x + 130) + 72 = - 64
d) |x| - 5 = -1
e) |x + 2| - 12 = -1
f) 135 - |9 - x| = 35
g) | x - 5| - 3| = 9
ai nhanh mik tik
Help me!!!!!!!!!!!!!
a, -121 - [-35 - x] = 50
<=> -35 - x = -121 - 50
<=> -35 - x = -171
<=> x = -171 + [-35] = -206
Vậy x = -206
b, 17 + x - [352 - 400] = -32
<=> 17 + x - [-48] = -32
<=> 17 + x + 48 = -32
<=> 17 + x = -32 - 48
<=> 17 + x = -80
<=> x = -80 - 17
<=> x = -97
Vậy x = -97
c, 2130 - [x + 130] + 72 = -64
<=> 2130 - [x + 130] = -64 - 72
<=> 2130 - [x + 130] = -136
<=> x + 130 = 2130 - [-136]
<=> x + 130 = 2130 + 136
<=> x + 130 = 2266
<=> x = 2266 - 130 = 2136
d, |x| - 5 = -1
<=> |x| = -1 + 5
<=> |x| = 4
<=> x = 4 hoặc x = -4
e, |x+ 2| - 12 = -1
<=> |x + 2| = -1 + 12
<=> |x + 2| = 11
<=> x + 2 = 11 hoặc x + 2 = -11
<=> x = 11 - 2 hoặc x = -11 - 2
<=> x = 9 hoặc x = -13
f,g Tương tự
a) -121 - (-35 - x) = 50
-121 + 35 + x = 50
x - 86 = 50
x = 50 + 86
x = 136
b) 17 + x - (352 - 400) = -32
17 + x - 352 + 400 = -32
x + 65 = -32
x = -32 - 65
x = -97
c) 2130 - (x + 130) + 72 = -64
2130 - x - 130 + 72 = -64
2072 - x = -64
-x = -64 - 2072
-x = -2136
x = 2136
d) |x| - 5 = -1
|x| = -1 + 5
|x| = 4
x = 4; -4
e) |x + 2| - 12 = -1
|x + 2| = -1 + 12
|x + 2| = 11
x + 2 = 11; -11
x + 2 = 11 hoặc x + 2 = -11
x = 11 - 2 x = -11 - 2
x = 9 x = -13
f) 135 - |9 - x| = 35
-|9 - x| = 35 - 135
-|9 - x| = -100
|9 - x| = 100
9 - x = 100; -100
9 - x = 100 hoặc 9 - x = -100
x = 100 + 9 x = -100 + 9
x = 109 x = -91
125-(-75)+32-(48+32)
47.347+247.(-47)
40.(45-135)-40.(45+65)
x-10=-14
15+x =13
25.x =-75
5x-16=-46
3.x-(-11)=-4
jup mik nhoa :(( mik ngao toan lam :((
a) 125-(-75)+32-(48+32) = 125 + 75 + 32 - 48 - 32 = 200 - 48 = 152
b) 47.347+347.(-47) = 347.( 14 - 47 ) = 347 . 0 = 0
c) x-10=-14
x = -14 +10
x = -4
d) 15 + x = 13
x = 13 - 15
x = -2
e) 25 . x = -75
x = -75/25
x = -3
g) 5x - 16 = -46
5x = -46 + 16
5x = - 30
x = -6
i) 3x - (-11) = -4
3x + 11 = -4
3x = -4 - 11
3x = -15
x = -5
hok tốt!!
tim x ( trong phep chia co dư)
a x : 135 = 204 ( dư 108 )
b 2005 : x = 16 ( dư 37 )
a) x : 135 = 204 (dư 108)
x = 204 x 135 + 108
x = 27 540 + 108
x = 27 648
b) ko biết
\(a,x:135=204\left(dư108\right)\Rightarrow x=204x135+108\)\(=27648\)
\(b,2005:x=16\left(dư37\right)\Rightarrow x=\left(2005-37\right):16=123\)
a) x : 135 = 204 ( dư 108 )
-->x=204*135+108=27648
b) 2005 : x = 16 ( dư 37 )
-->x=(2005-37):16=123
k nha
tìm x
(x-32)chia 16=48
thông cảm mk ko viết được dấu chia
( x - 32 ) : 16 = 48
x - 32 = 48 x 16
x - 32 = 768
x = 768 + 32
x = 800
(x-32):16=48
x-32=48*16
x-32=768
x=768+32
x=800
\(\left(x-32\right)\div16=48\)
\(x-32\) \(=48\times16\)
\(x-32\) \(=768\)
\(x\) \(=768+32\)
\(x\) \(=800\)