Các câu hỏi tương tự
\(\dfrac{x-3}{3}=\dfrac{2x+1}{5}\)
\(\dfrac{x+1}{22}=\dfrac{6}{x}\)
\(\dfrac{2x-1}{2}=\dfrac{5}{x}\)
\(\dfrac{2x-1}{21}=\dfrac{3}{2x+1}\)
\(\dfrac{2x+1}{9}=\dfrac{5}{x+1}\)
Tìm x
7, Tìm x
a) \(\dfrac{1}{4}-\left|x+\dfrac{1}{2}\right|=\dfrac{1}{8}\) b) |2x-5|=x+3
c) |2x+1|-2x=6 d) |x-5|+x=5
a)tìm x biết: 5^x-1 + 5^x-3= 650
b)tìm x biết: gttd x+1 +gttd x+2 +.......+gttd x+100=605x (gttd: giá trị tuyệt đối)
c) tìm x,y biết : (2x+1)/5=(4y-5)/9=(2x+4y-4)/7x
1. Tìm x :
5^x+2 + 5^x+1 +5^x = 3^2x + 3^2x+1 + 3^2x+3
1. Tìm x :
5^x+2 + 5^x+1 +5^x = 3^2x + 3^2x+1 + 3^2x+3
Tìm x để biểu thức nhận giá trị âm
2, 2x . (x+1)
3, 5x - x^2
4, (x+3) . (1-2x)
5, (x - 2/5) (x + 3/7) (x +3/4)
6, (x + 3/5) (x - 2/3) (2x +1
Tìm x biết : a) 2x+3/15 = 7/5. b) x-2/9 = 8/3. c) -8/x = -x/18 d) 2x+3/6 = x-2/5. e) x+1/22 = 6/x f) 2x-1/2 = 5/x g) 2x-1/21 = 3/2x+1 h) 10x+5/6 = 5/x+1
tìm x
/2x+3/+/x+2/=4x
/2x-1/+/1-2x/=8
/2x^2+/x-5//=2x^2+5
Tìm x: (x+1).(2x-1)-(x+5).(2x-7)=0
Tìm x \(\frac{7^{x+2}+7^{x+1}+7^x}{57}=\frac{5^{2x}+5^{2x+1}+5^{2x+3}}{131}\)