Các câu hỏi tương tự
Tim x thuoc Z
a) 3x+ 17 chia het cho 2x+11
b) 2x +8-x chia het cho 5
c) 2x +9-5x+17 -3x chia het cho x+3
so sanh -58/89 va 36/-53
tim x thuoc z biet
a) 2x+7 chia het x+3
b) x^2 +5x+11 chia hetx+3
a, Tim x biet:/x-2/+/3-2x/=2x+1
b, Tim x,y thuoc Z biet:xy+2x-y=5
c, tim x,y,z, biet :2x=3y;4y=5zva 4x-3y+5z=7
Tim xthuoc Z biet:
1,|2x-5|-|2x+9|=0
2,|x+1|-|x+2|-|3-x|=7
3,|2x+3|+|3x+2|-|4-x|=10
tim x thuoc z biet /x+1/ +/x-2/+/x+7/=5x-10
a,tim x biet |x-2|+|3-2x|=2x+1
b,tim x,y thuoc Z biet xy+2x-y=5
c, tinh A=(1-1/15)(1-1/21)(1-1/28).....(1-1/210)
tim x thuoc z biet /x+1/ +/x-2/+/x+7/=5x-10
tim cac so x,y,z thuoc Q biet rang (x+y):(5-z):(y+z):(y+9)=3:1:2:5
tim x thuoc Z biet x^3-x^2+x-1=0