25−(𝑥+[𝑥+(−8)])=0
⇔25−(𝑥+[𝑥−8])=0
⇔25−(𝑥+𝑥−8)=0
⇔25−(2𝑥−8)=0
⇔25−2𝑥+8=0
⇔33−2𝑥=0
⇔−2𝑥+33=0
⇔𝑥=\(\dfrac{33}{2}\)
25−(𝑥+[𝑥+(−8)])=0
⇔25−(𝑥+[𝑥−8])=0
⇔25−(𝑥+𝑥−8)=0
⇔25−(2𝑥−8)=0
⇔25−2𝑥+8=0
⇔33−2𝑥=0
⇔−2𝑥+33=0
⇔𝑥=
25−(𝑥+[𝑥+(−8)])=0
⇔25−(𝑥+[𝑥−8])=0
⇔25−(𝑥+𝑥−8)=0
⇔25−(2𝑥−8)=0
⇔25−2𝑥+8=0
⇔33−2𝑥=0
⇔−2𝑥+33=0
⇔𝑥=\(\dfrac{33}{2}\)
25−(𝑥+[𝑥+(−8)])=0
⇔25−(𝑥+[𝑥−8])=0
⇔25−(𝑥+𝑥−8)=0
⇔25−(2𝑥−8)=0
⇔25−2𝑥+8=0
⇔33−2𝑥=0
⇔−2𝑥+33=0
⇔𝑥=
Bài 2.Tìm x
a,(x-2018) .3=0
b,25(x-8)=0
c,25+(15+x)=75
96-3(x+8)=42
15.5.(x-25)-225=0
250:x+15=25
36:(x-5)=2^2
[3.(70-x)+5]:2=46
(-7)^3*(25+x)>0
(-8)^2(/x/-12)>0
a,25+[x+17]=0 ; b'20-[x+12]=0 ; c, 15+[5-x]=-7 ; d, 3-5+[-x+3]=6 ; e, 25-[30+x]=x-[27-8] ; f, [x-12]-15=[20-7]-[18+x]
Tìm x :
a) x . ( x - 2 ) = 0
b) ( x - 1 ) . ( x - 3 ) = 2
Tính nhanh ( nếu có )
a) 15 . 37 .4 + 120 . 21 + 21 . 5 . 12
b) 19 + 19 . 99 - 25 . 8
c) 27 + 73 - 30 : ( 25 - 10 )
d) 15 - 25 . 8 : ( 25 - 10 )
tim so nguyen x biet
a,9-25=[7-x]-[25+7]
b,-26-[x-7]=0
c,30+[32-x]=10
d,2.x-18=10
e,3.x+26=5
f,/x/-5=-12+30
g,[/x/+1].[4-2x]=0
h,8+/x/=/-8/+11
i,4.[x+1]-[3x+1]=14
|x-13|=5
và
|x+8|+3=25
và
|-x+8|=|1-8|
và
|x+3|+|y-2|=0
Tìm x biết:a) 29-x/21 + 27-x/23 + 25-x/25 + 23-x/27 + 21-x/29
b)x-10/30 + x-14/43 + x-5/95 + x-148/8 = 0
1) 2( 3x + 5) - 6=0
2) 5x + 3 ( 4+ 2x ) = 25
3) 3 ( 4x + 1) +2 (x - 1) =105
4) 30- [ 2( x - 3 ) - 2 ] = 14
5) 3 ( x - 8 ) (4x + 5 ) - 8 ( x - 8 ) = 0
6) 4x = 8