Tìm X:
A) (X-32)-68=0 b)274-(9.X+18)=4
C)442+(418-X)=860 d)107+(210-x)
TÌM X GIÚP MÌNH NHA!YÊU CÁC BẠN NHÌU!!!
Tìm x, biết:
a) (x - 32) - 68 = 0;
b) 274 - ( 9.x + 18) = 4
c) 442 + (418 - x) = 860;
d) 107 + (210 - x) = 317
a) x = 100.
b) x = 28.
c) x = 0.
d) x = 0.
Bài cô t vừa giao nè
a) 442 + (418 - x) = 860;
b) (210 - x) + 107 = 317
c) (x - 32) - 68 = 0
d) 274 - (x + 18) = 4
a, `442 + (418 - x) = 860`
` 418 - x = 860 - 442`
`418 - x = 418`
`x=418 - 418`
`x=0`
Vậy `x=0`
b, `(210 - x) + 107 = 317`
`(210 - x) = 317 - 107`
`210 - x = 210`
`x=210 - 210`
`x=0`
Vậy `x=0`
c, `(x - 32) - 68 = 0`
`(x - 32) = 0+68`
`x - 32= 68`
`x=68+32`
`x=100`
Vậy `x=100`
d, `274 - (x + 18) = 4`
`(x + 18) = 274 - 4`
`x+18=270`
`x=270-18`
`x=252`
Vậy `x=252`
a: =>418-x=418
=>x=0
b: =>210-x=210
=>x=0
c: =>x-100=0
=>x=100
d: =>x+18=270
=>x=252
`@` `\text {Ans}`
`\downarrow`
`a)`
`442 + (418 - x) = 860`
`=> 418 - x = 860 - 442`
`=> 418 - x = 418`
`=> x = 418 - 418`
`=> x = 0`
Vậy,` x=0`
`b)`
`(210 - x) + 107 = 317`
`=>210 - x = 317 - 107`
`=> 210 - x = 210`
`=> x = 210 - 210`
`=> x = 0`
Vậy, `x=0`
`c)`
`(x - 32) - 68 = 0`
`=> x - 32 = 68`
`=> x = 68 + 32`
`=> x = 100`
Vậy, `x=100`
`d)`
`274 - (x + 18) = 4`
`=> x + 18 = 274 - 4`
`=> x + 18 = 270`
`=> x = 270 - 18`
`=> x = 252`
Vậy, `x=252.`
bài 15: tìm x
a) (x - 25 ) - 175 = 0
b) 485 - ( 6 . x + 60 ) = 5
c) ( x - 31 ) - 68 = 0
d) 274 - ( 9 . x + 18 ) = 4
e) 315 + ( 135 - x ) = 450
f) 346 + ( 210 - x ) = 556
g) 442 + ( 420 - x ) = 860
h) 107 + (320 - x ) = 317
1.Tìm x , biết :
a)35.(x-10)=35
b)21.(32-x)=21
c)25.(2x.4).12=0
d)(x-4):6-5=10
e)485-(6.x+60)=5
f)315+(135-x)=450
g)346+(210-x)=556
h)(x-32)-68=0
i)274-(9.x+18)=4
j)442+(418-x)=860
k)107+(210-x)=317
l)x-280:35=5.54
m)(x-120):35=5
n)(x+100)=800
o)x.5+10.9=990
p)x-120:30=40
q)(x+120):20=8
r)(x+5).3=300
s)x.2+21:3=27
2.Tính nhanh
a) 99 - 97 + 95 - 93 + 91 - 89 + ... + 7 - 5 + 3 -1
b)47.8 - 27.9 + 47.12 - 27.11
c) 1326 +538-326-62
d) 2391-147-253
e) 8-96+94-92+90-88+...+7-5+3-1
f) 24.42-35.24-24.7
g)42.13-22.5+42.22
h)125:4-25:4
i)1159:125-159:125
*Lưu ý : các dấu (.) bằng với dấu nhân nhé
a) 35.(x-10)=35
x-10= 35:35
x-10= 1
x= 1+10
x= 10
b) 21.(32-x) =21
32-x = 21:21
32-x = 1
x= 32-1
x= 31
a)\(35.\left(x-10\right)=35\Rightarrow x-10=35:35=1\Rightarrow x=10+1=11\)
b) \(21.\left(32-x\right)=21\Rightarrow32-x=21:21=1\Rightarrow x=32-1=31\)
c) \(25.\left(2x.4\right).12=0\Rightarrow25.\left(2x.4\right)=0:12=0\Rightarrow2x.4=0:25=0\)
\(\Rightarrow2x=0:4=0\Rightarrow x=0:2=0\)
tìm x
274 - ( 9x x+18)=4
442+(418-x)=860
274 - ( 9x+18)=4
9x+18=274-4
9x+18=270
9x=270-18
9x=252
x=252:9
x=28
442+(418-x)=860
418-x=860-442
418-x=418
x=418-418
x=0
`274 - ( 9xx x+18)=4`
`9xx x+18 =274-4`
`9xx x+18 =270`
`9 xx x=270-18`
`9 xx x=252`
`x=252:9`
`x= 28`
__
`442+(418-x)=860`
`418-x=860-442`
`418-x=418`
`x=418-418`
`x=0`
`#3107`
`274 - (9x + 18) = 4`
`=> 9x + 18 = 274 - 4`
`=> 9x + 18 = 270`
`=> 9x = 270 - 18`
`=> 9x = 252`
`=> x = 252 \div 9`
`=> x = 28`
Vậy, `x = 28.`
____
`442 + (418 - x) = 860`
`=> 418 - x = 860 - 442`
`=> 418 - x = 418`
`=> x = 418 - 418`
`=> x = 0`
Vậy, `x = 0.`
(126+32) x (18-16-2) các bạn giúp mình với, thanks các bạn nhìu nha
( 126 + 32 ) x ( 18 - 16 - 2 )
= 158 x ( 2 - 2 )
= 158 x 0
= 0
\(\left(126+32\right)\times\left(18-16-2\right)\)
\(=158\times0\)
\(=0\)
Tìm x:
a) 12,25 x 121,3 - x – 225 = 755
b) 9 : x – 5,34 : x = 3
CÁC BẠN GIẢI CHI TIẾT RA GIÚP MÌNH NHÉ! CẢM ƠN CÁC BẠN RẤT NHIỀU!
\(a,\Rightarrow1485,925-x-225=755\)
\(\Rightarrow1485,925-x=755+225\)
\(\Rightarrow1485,925-x=980\)
\(\Rightarrow x=1485,925-980\)
\(\Rightarrow x=505,925\)
\(b,\Rightarrow\left(9-5,34\right):x=3\)
\(\Rightarrow3,66:x=3\)
\(\Rightarrow x=3,66:3\)
\(\Rightarrow x=1,22\)
tìm x:
a, (2x - 3) - (x - 5) = (x + 2) - (x - 1)
b, 2(x - 1) - 5 (x + 2) = -10
mong các bạn giúp mình :333
Arigato :333
a) Ta có: \(\left(2x-3\right)-\left(x-5\right)=\left(x+2\right)-\left(x-1\right)\)
\(\Leftrightarrow2x-3-x+5=x+2-x+1\)
\(\Leftrightarrow x+2=3\)
hay x=1
Vậy: x=1
b) Ta có: \(2\left(x-1\right)-5\left(x+2\right)=-10\)
\(\Leftrightarrow2x-2-5x-10=-10\)
\(\Leftrightarrow-3x=-10+10+2=2\)
hay \(x=-\dfrac{2}{3}\)
Vậy: \(x=-\dfrac{2}{3}\)
a, (2x - 3) - (x - 5) = (x + 2) - (x - 1)
2x - 3 - x + 5 = x + 2 - x + 1
(2x - x) + (-3 + 5) = (x - x) + (2 + 1)
x + 2 = 3
x = 1
1. Tìm x,y:
a) x-y = xy = x : y
b) x+y = xy = x : y
c) x(x - y) = 3/10 và y(x - y) = -3/50
2. Tìm x:
a) l(x - 1)2l = 0
b) l x2 - 1l = 0
Các bạn giúp mình giai nhanh nha chủ nhật mình nộp rồi. Cảm ơn các bạn nhìu ^^