Các câu hỏi tương tự
tim x, y biet:
1+2y/18 = 1+4y/24 = 1+6y/6y
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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;y thuoc z biet:
1/x + 1/y = 1/5
tim x va y biet
y\2=2\5+3.x=1\5+y
Tim x,y,z biet:
1)|x|+|1-x|+|x+2|=5
2)|x-1/2|+|y+2\3|+|x^2+xz|=0
tim cac so x,y,z thuoc Q biet rang (x+y):(5-z):(y+z):(y+9)=3:1:2:5
tim so nguyen x,y biet 5/x+y/4=1/8
tim x biet: \1/2-1/3\=-1/4-y
\x*(x2-5/40\=x
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