14xX-X-1=9
14xX-Xx1=9+1
Xx(14-1)=10
X=10:13
X=
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bai 1)tim x biet
a )24-(36+5)=x
b)14-21=(13-x)-(15+8)
bai 2) tim x biet
a)17-x=-25+(-16+9)
b)3x-21=-19-(-2x)
-84/14 < x < 108/9 tim x
tim x;biet
a;x-14=3.x+18
b;|x+3|+|x+9|+|x+5|=4x
Bai1:Tim x thuoc Z biet:
a)7x=14
b)6x-(-5)=17
(x+2) (x-9)=0
Tim cac so nguyen x, biet:
1. -10<x<-5
2. -4<hoac= x <hoac=3
3. n+9<x<hoac=n+12
4. n+15<x<n+15
5. x<-9 va x<9
6. |x|=|10|
7. |x|=20 va x>0
8. |x|=-100
9. |-5|+|-9|+x=14+|12|
10. 8+x=|-8|+20
tim x:14.x-x-1=32
tim x
1/4. (x/4+-2/x+2/8)=-1/14
tim so nguyen x biet
a) 14 - 3x = -x + 4
b) x - 12 = (-9)- (-15)
c) 16 - \(|\)5 - 2x \(|\)= 9
Tim x thuoc N biet:
a, (225-x) -81=54
b, 7.(x-14)+35= 25+279:9
c, 7x : 49= 727