tim x biet
a;\(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
b; \(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
x+1/2x+1 = 0,5x+2/x+3
x + 1/2x + 1 = 0,5x + 2/x+3 x-1/2005 = 3-y/2006 và x - y = 4009 Tìm x,y
Tìm x, biết : a, |x + 2| = x b, |x - 1|- 2x = 1212 c, |0,5x - 2|-|x + 3| = 0 d, |x - 3,5|+|x + 1,3| = 0
Tìm x , biết :
\(a,\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
1. Tìm x
a) 0,5x - 2 - ( 2,5x + 1) - (-x+2) = x
b) - 1/2 . (2x + 3) + 3/4 . (4x + 2/3) = 1/2 . ( 2- 3x)
c) 5^x + 5^x+2 = 650
CMR:
a) 3x+2/5x+7=3x-1/5x+1
b)x+1/2x+1=0,5x+2/x+3
Tìm x biết \(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
minh thach cac ban lam duoc cau nay day.
x+1/2x+1=0,5x+2/x+3