\(\Rightarrow\left(3x+2\right).\left(5x-3\right)=\left(5x+7\right)\left(3x-1\right)\)
\(\Rightarrow15x^2-9x+10x-6=15x^2-5x+21x-7\)
\(\Rightarrow19x-6=26x-7\)
\(\Rightarrow26x-19x=7-6\)
\(\Rightarrow13x=1\)
\(\Rightarrow x=\frac{1}{13}\)
Tìm x,biết:
a)(3x-1).(2x+7)-(x+1).(6x- 5)=16
b)(10x+9).x-(5x-1).(2x+3)=8
c)(3x- 5).(7- 5x)+(5x+2).(3x-2)-2=0
Cho 2 đa thức : f(x) = -2x2 - 3x3 - 5x + 5x3 - x + x2 + 4x + 3 + 4x2
g(x) = 2x2 - x3 + 3x + 3x3 + x2 - x - 9x + 2
a) Tìm h(x) = f(x) - g(x)
b) Tìm nghiệm của đa thức h(x)
HELP ME!!!THANK YOU CÁC CẬU!!
tìm x
a, 31-2/x+23=9/4
b, |2x-1|/1\2=18/5
c,x-2/x-1=x+4/x+7
h, 3x+2/5x+7=3x-1/5x-3
tìm x biết :
a. \(\dfrac{3x+2}{5x+7}=\dfrac{3x-1}{5x+1}\)
b. \(\dfrac{x+1}{2x+1}=\dfrac{0,5x+2}{x+3}\)
Tìm x:
\(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
1) |7 - x | = 5x + 1
2) |x - 1 | = 3x + 2
3) |x + 15 | + 1 = 3x
4) |x + 7 | -x = 7
tìm x,y,z \(2x=3y,5x=7zvà3x-7y+5z=30\)
tìm x
\(\dfrac{3x+2}{5x+7}=\dfrac{3x-1}{5x-3}\)
1.Tìm x
a)\(\dfrac{3x+2}{5x+7}\)=\(\dfrac{3x-1}{5x+1}\)
b)\(\dfrac{x+1}{2x+1}\)=\(\dfrac{6,5x+2}{x+3}\)
Tìm x thỏa mãn:
a) \(2\left|\frac{2}{3}-x\right|+\frac{1}{4}=\frac{3}{4}\)
b) \(8\sqrt{x}+2x-9=5x+7+6\sqrt{x}-3x-12\)
c) \(2x^2+5x+8+\sqrt{x}=x^2+3x+35+x^2+2x-7\)
