8.(x-7)-6.(x-2)=8.6-50
8x-56-6x+12=-2
2x-44=-2
2x=42
x=21
Vậy x=21
8.(x-7)-6.(x-2)=8.6-50
8x-56-6x+12=-2
2x-44=-2
2x=42
x=21
Vậy x=21
Tim x thuoc Z biet:
a,(10 - x)^2 / 3+3= -9
b,|x-6| *7-(-2)^2= -8+39
tim x biet
a, 8 thuoc x va x >0
b, 12 thuoc x va x < 0
c, -8 thuoc x va 12 thuoc x
d, x thuoc 4 ; x thuoc(-6 ) va -20 < x < -10
e, x thuoc (-9) ; x thuoc (+12) va 20 <x < 50
Tim x thuoc z, biet :(3x+7) chia het cho (x+2)
tim x,y thuoc Z biet
|y|.|2x+3|=8
|2x+4|+|y-3|=0
|x-1|+|2y+7|=3
|x+5|+|2y+6| nho hon hoac bang 0
tim x,y thuoc z biet
-24/-6 = x/3 = 4/y^2 = z^3/-2
Tim so tu nhien x biet rang:
a/ 8.6+288:(X-3)2=50
b/ (x2 - (62-(82-9.7)3- 7.5)3- 5.3)3= 1 giup minh voi nhe
tim x thuoc Z biet (x-7)x(x+3)<0
tim x, y thuoc Z biet 3/x/ phan 2 +5/y/ phan 3=8
tim x thuoc Z biet:
a, x (x-7)=0
b, x (x+11)=0
c, (x+8) (x-12)
d, (x-3) (x2 + 3)=0