Tìm x: 17+x-(352+400)= -32
17+x-(352-400)=-32
-121-(-35-x)=50
||x-5|-3|=9
15-(-x+18)=-24
10-|x+3|=-4-(-10)
a) 17+x- (-8)=-32
=>x =-32+(-8)-17
=.x = -57
b) -121+35+x=50
=>x=50+121-35
=> x= 136
c)
Tìm số nguyên x
a)(17 + x) - (352 - 400) = -32
b) -5 - (24 -2.x) = -11
`(17+x)-(352-400)=-32`
`17+x-352+400=-32`
`x=-32-17+352-400`
`x=-97`
`-5-(24-2xx x)=-11`
`-5-24+2x=-11`
`2x=-11+5+24`
`2x=18`
`x=9`
\(a,\left(17+x\right)-\left(352-400\right)=-32\)
\(\Rightarrow17+x+48=-32\)
\(\Rightarrow17+x=-80\)
\(\Rightarrow x=-97\)
_____________________________
\(b,-5-\left(24-2x\right)=-11\)
\(\Rightarrow-5-24+2x=-11\)
\(\Rightarrow-29+2x=-11\)
\(\Rightarrow2x=-40\)
\(\Rightarrow x=-20\)
\(a,\left(17+x\right)-\left(352-400\right)=-32\\ \left(17+x\right)-\left(-48\right)=-32\\ 17+x=-32-48\\ 17+x=16\\ x=-80-17\\ x=-97\\ b,-5-\left(24-2.x\right)=-11\\ 24-2.x=-5-\left(-11\right)\\ 24-2.x=6\\ 2.x=24-6\\ 2.x=18\\ x=18:2\\ x=9\)
Bài 2 Tìm X biết
8 ) | x + 12 | - 12 = 1
9 ) 135 - | 9- x | = 35
10) 17 + x - ( 352 - 400 ) = - 32
11) 2130 - ( x + 136 ) + 72 = - 64
12) ( x - 2 ) - ( -8 ) = - 137
13) 10 - | x + 3 | = - 4 . ( - 10 )
8 ) | x + 12 | - 12 = 1
\(|x+12|=13\)
\(\Rightarrow\orbr{\begin{cases}x+12=13\\x+12=-13\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=1\\x=-25\end{cases}}\)
Vậy \(x\in\left\{1;-25\right\}\)
9) 135 -\(|9-x|=35\)
\(|9-x|=135-35\)
\(|9-x|=100\)
\(\Rightarrow\orbr{\begin{cases}9-x=100\\9-x=-100\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=-91\\x=109\end{cases}}\) Vậy x\(\in\left\{-91;109\right\}\) 10) 17+x-(352-400)=-32 17+x-352+400=-32 17+x-352 =(-32) - 400 17+x-352 =-432 17+x =(-432) + 352 17+x =-80 x =(-80) - 17 x =-97 Vậy x =-97 11) 2130 - (x+136) + 72 =-64 2130 - (x+136) =(-64) -72 2130 - (x+136) =-136 (x +136) = 2130 -(-136) x+136 =2266 x =2266 - 136 x =2130 Vậy x=2130 do sap an cơm nên chiều mình sẽ giải tiếp nha! sorryy
12) (x-2) - (-8) = -137
(x-2) +8 =-137
(x-2) =(-137) - 8
x-2 =-145
Vậy x=-145
13) 10-\(|x+3|=-4.\left(-10\right)\) 10- \(|x+3|=40\) \(|x+3|=\) 40+10 \(|x+3|=50\)
\(\Rightarrow\orbr{\begin{cases}x+3=50\\x+3=-50\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=50-3\\x=\left(-50\right)-3\end{cases}}\)
\(\Rightarrow\orbr{\begin{cases}x=20\\x=-53\end{cases}}\)
Vậy x\(\in\left\{20;-53\right\}\)
a ) ( - x + 31 ) - 39 = - 69
b ) - 120 - ( - 30 - x ) = - 50
c ) 17 + x - [ 352 - ( - 400 ) ] = - 32
Trả lời giúp mình câu hỏi này nhé !
a) (-x+31)-39=-69
-x+31=-69+39
-x+31=-30
-x=-30-31
-x=-61
=> x=61
b) -120-(-30-x)=-50
-30-x=-120-(-50)
-30-x=-70
x=-30-(-70)
x=40
c) 17+x- [ 352-(-400)]=-32
17+x-752=-32
17+x=-32+752
17+x=720
x=720-17
x=703
đúng nha
các bạn giúp mình giải những bài này
a). ( 31-x)-39=-69
b).-121-(35-x)=50
c).17+x-(352-400)= -32
d).2130-(x+130)+72=-64
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
Tìm x biết:
a) (-x+31)-39=-69 b)-121-(35-x)=50
c)17+x-(352-400)=-32 d)2130-(x+130)+72=-64
e)|x|-5=-1 f)|x+2|-13=-1
g)135-|9-x|=35 h)||x-5|-3|=9
a) (-x + 31 ) - 39 = -69 => -x + 31 = -69 + 39 => -x = -30 + 31 => -x = -61 => x = 61
b) -121 - ( 35 - x ) = 50 => 35 - x = -121 - 50 => x = 35 - ( -171 ) => x = 206
c) 17 + x - ( 352 - 400 ) = -32 => 17 + x + 48 = -32 => x = -32 - 48 - 17 => x = -97
d) 2130 - ( x + 130 ) + 72 = -64 => 2130 - ( x + 130 ) = -64 - 72 => x + 130 = 2130 - ( -136 ) => x = 2266 - 130 => x = 2136
e) | x | - 5 = -1 => | x | = -1 + 5 => | x | = 4 => x = 4
f) | x + 2 | - 13 = -1 => | x + 2 | = -1 + 13 => x + 2 = 12 => x = 12 - 2 => x = 10
=> x + 2 = -12 => x = -12 - 2 => x = -14
g) 135 - | 9 - x | = 35 => | 9 - x | = 135 - 35 => 9 - x = 100 => x = 9 - 100 => x = -91
=> 9 - x = -100 => x = 9 - (-100) => x = 109
h) || x - 5 | - 3| = 9 => | x - 5 | - 3 = 9 => | x - 5 | = 9 + 3 => x - 5 = 12 => x = 12 + 5 => x = 17
=> x - 5 = -12 => x = -12 + 5 => x = -7
=> | x - 5 | - 3 = -9 => | x - 5 | = -9 + 3 => | x - 5 | = -6 ( loại )
1. Tìm x biết: (x +2) + (x+4)+(x +6) +….+ (x+32) =352
(x+2)+(x+4)+(x+6)+...+(x+32)=352(x+2)+(x+4)+(x+6)+...+(x+32)=352
(x+x+...+x)+(2+4+6+...+32)=352(x+x+...+x)+(2+4+6+...+32)=352
16x+272=35216x+272=352
16x=352−272=8016x=352−272=80
x=80:16=5
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