Các câu hỏi tương tự
tim x biet
a;\(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
b; \(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
Tìm x biếta,left(frac{4}{5}right)^{2x+7}text{}frac{625}{256}b,frac{7^{x+2}+7^{x+1}+7^x}{57}text{}frac{5^{2x}+5^{2x+1}+5^{2x+3}}{131}c,left(4x-3right)^4text{}left(4x-3right)^2d,frac{2x+3}{5x+2}text{}frac{4x+5}{10x+2}e,frac{3x-1}{40-5x}text{}frac{2x-3x}{5x-34}f,frac{15}{x-9}text{}frac{20}{y-12}text{}frac{40}{z-2x} và xytext{}1200
Đọc tiếp
Tìm x biết
a,\(\left(\frac{4}{5}\right)^{2x+7}\text{=}\frac{625}{256}\)
b,\(\frac{7^{x+2}+7^{x+1}+7^x}{57}\text{=}\frac{5^{2x}+5^{2x+1}+5^{2x+3}}{131}\)
c,\(\left(4x-3\right)^4\text{=}\left(4x-3\right)^2\)
d,\(\frac{2x+3}{5x+2}\text{=}\frac{4x+5}{10x+2}\)
e,\(\frac{3x-1}{40-5x}\text{=}\frac{2x-3x}{5x-34}\)
f,\(\frac{15}{x-9}\text{=}\frac{20}{y-12}\text{=}\frac{40}{z-2x}\) và \(xy\text{=}1200\)
Tìm x
a, \(-\frac{22}{15}x+\frac{1}{3}=\text{|}-\frac{2}{3}+\frac{1}{5}\text{|}\)
b,\(x:15=8:24\)
c,\(\frac{-3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
d, \(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
nói cách làm lun nha
tìm x biết |x-1 =2x-5 b) ||x+5|-4| =3 c) |9-7x| =5x-3 d) 8x - |4x +1| =x+2 e) |17x - 5| - |17x + 5| =0 g) |3x +4| =2 |2x-9| h) Tìm x biết |10x+7|< 37 i) |3-8x|<_ ( bé thua hoặc bằng) 19 k) |x +3| -2x =|x-4|
: Tìm x, biết:
a) 3x( 4x- 1) - 2x(6x- 3 )30 b) 2x(3-2x) + 2x(2x-1)15
c) (5x-2)(4x-1) + (10x +3)(2x - 1)1 d) (x+2) (x+2)- (x -3)(x+1) 9
e) (4x+1)(6x-3) 7 + (3x – 2)(8x + 9) g) (10x+2)(4x- 1)- (8x -3)(5x+2) 14
Đọc tiếp
: Tìm x, biết:
a) 3x( 4x- 1) - 2x(6x- 3 )=30 b) 2x(3-2x) + 2x(2x-1)=15
c) (5x-2)(4x-1) + (10x +3)(2x - 1)=1 d) (x+2) (x+2)- (x -3)(x+1) = 9
e) (4x+1)(6x-3) = 7 + (3x – 2)(8x + 9) g) (10x+2)(4x- 1)- (8x -3)(5x+2) =14
tim x
\(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
\(\frac{x+1}{2x+1}=\frac{0.5x+2}{x+3}\)
a) \(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
b)\(\frac{x+1}{2x+1}=\frac{0.5x+2}{x+3}\)
Tìm x:
a, \(\frac{2x+3}{5x+2}=\frac{4x+5}{10x+2}\)
b,\(\frac{3x-1}{40-5x}=\frac{25-3x}{5x-34}\)
Tìm x : a) |9-7x| = 5x-3
b) 8x - | 4x +1 | = x+2
c) | 17x - 5 | - | 17x + 5 | = 0
d) | 3x +4 | = 2 | 2x - 9 |
e) | 10x + 7 | < 37
f) |3-8x| \(\le\)19
g) | x + 3 | - 2x = | x-4 |