Các câu hỏi tương tự
Tim x y biet (x-7).(xy+1)=9
Tim x biet.
a/x+5+x-7+x-9=x-5+x-2
b/9(2x-3)+5=4(4-1)-8
c/2=-(×-1)^5+34
d/7=-|x-5|+10
tim x
x.2 4/9 = 4 2/5 _1 4/7
x:10 6/5 = 4 6/5 + 9 7/5
x: 3 10/3 = 9 1/9 - 5 1/9
tim x,y thuoc N (x-7).(xy+1)=9
1.Tim x biết x - 252525 * 3/2 + 3/5 - 3/7 / 3/2 + 1/5 - 1/7 =7/8
2. 9/8 - 9/8 * 2/5 + 2/6 - 2/7 / 3/5 + 3/6 - 3/7 - X = 1
Bai 1 tim x
2/3 x -3/2 x=5/12
72-3/x+1/=9
7/9 : (2+3/4 x)+5/9=23/27
tim x, y thuoc z biet (x+7 ) (xy + 1)= 9
Tim x
1/ | x+15| =7
2/ 2. | x-5| =8
3/ 3. |2x-7|= 9
Tim x biet
d) \(\frac{x-1}{21}=\frac{3}{x+1}\)
e) \(2\frac{7}{9}-\frac{12}{13}x=\frac{7}{9}\)