/x-3/-7=9
=> /x-3/=16
=> TH1 x-3=16 => x=19
th2 x-3=-16 => x= -13
/x-3/ = 16
\(\Leftrightarrow\) x -3 = 16 => x = 19
x - 3 = - 16 => x = - 13
| x - 3 | - 7 = 9 | x - 3 | = 9 + 7 | x - 3 | = 16 vậy x- 3 = 16 hoặc x - 3 = -16 Nếu x - 3 =16\(\Rightarrow\) x = 19 ; x -3 = -16 \(\Rightarrow\)x = -13
Vậy x = 19 ; x = -13
cho x ; y la cac so nguyen to sao cho gia tri tuyet doi cua x cong gia tri tuyet doi cua y bang 5 so cap so nguyen (x;y) thoa man la
17-2[x]=11
[x] la gia tri tuyet doi
4[x]-25=(-9)
[x] la gia rei tuyet doi
gia tri tuyet doi cua 7-x= gia tri tuyet doi cua x+3 tim x
tim so nguyen x, biet
a. 7 - x = 8 - ( -7 )
b. x - 8 = ( -3 ) = -8
tim so nguyen a, biet
a. gia tri tuyet doi a gia tri tuyet doi = 2
b. gia tri tuyet doi a + 2 gia tri tuyet doi = 0
bai 1 so cac gia tri nguyen cua x de gia tri tuyet doi cua x + gia tri tuyet doi cua x-2 =0
bai 2 so cac gia tri nguyen cua x thoa man gia tri tuyet doi cua x-3 + gia tri tuyet doi cua 8-2x = 1 là
gia tri tuyet doi cua x-2 +2 . gia tri tuyet doi ua x-y =0
gia tri tuyet doi cua -2x+3 =8 vay so gia tri cua x la
gia tri tuyet doi cua x-1+gia tri tuyet doi x+3=4