\(\dfrac{\left(5x+6\right)20}{140}\) -\(\dfrac{\left(3x+1\right)35}{140}\)=\(\dfrac{\left(x+16\right)28}{140}\)
=> (5x+6).20-(3x+1).35 = (x+16).28
<=>100x+120-(105x+35) = 28x+448
<=>100x+120-105x-35 = 28x+448
<=>100x-105x-28x = -120+35+448
<=> -33x = 363 <=> x = -11
Giải phương trình:
a) \(\dfrac{x^2-x-6}{x-3}=0\)
b) \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)
c) \(\dfrac{12}{1-9x^2}=\dfrac{1-3x}{1+3x}-\dfrac{1+3x}{1-3x}\)
d) \(\dfrac{x+5}{x-1}=\dfrac{x+1}{x-3}-\dfrac{8}{x^2-4x+3}\)
e) \(\dfrac{x+1}{x-2}-\dfrac{5}{x+2}=\dfrac{12}{x^2-4}+1\)Thể loại truyện
Giải phương trình:
a) 4x-16=3x(x-4)
b) \(\dfrac{x+2}{x-2}-\dfrac{1}{x}=\dfrac{2}{x\left(x-2\right)}\)
Giải các phương trình sau :
a) \(\left(4x-10\right)\left(24+5x\right)=0\)
b) \(\left(3,5-7x\right)\left(0,1x+2,3\right)=0\)
c) \(\left(3x-2\right)\left(\dfrac{2\left(x+3\right)}{7}-\dfrac{4x-3}{5}\right)=0\)
d) \(\left(3,3-11x\right)\left(\dfrac{7x+2}{5}+\dfrac{2\left(1-3x\right)}{3}\right)=0\)
bài 1 : Giải cac phuong trinh sau
a, \(\dfrac{x-3}{5}=6-\dfrac{1-2x}{3}\)
b, \(\dfrac{3x-2}{6}-5=\dfrac{3-2\left(x+7\right)}{4}\)
c, \(2\left(x+\dfrac{3}{5}\right)=5-\left(\dfrac{13}{5}+x\right)\)
d, \(\dfrac{5\left(x-1\right)+2}{6}-\dfrac{7x-1}{4}=\dfrac{2\left(2x+1\right)}{7}-5\)
e, \(\dfrac{x-1}{2}+\dfrac{x-1}{4}=1-\dfrac{2\left(x-1\right)}{3}\)
g, \(\dfrac{2-x}{2001}-1=\dfrac{1-x}{2002}-\dfrac{x}{2003}\)
Các bạn ơi ! giúp mik với !!! chiều nay học roi
giải phương trình ai giúp e vs ạ T_T
\(\dfrac{25x+\left(3x-4\right)}{\dfrac{5}{15}}=\dfrac{\left(3-x\right)+105x}{\dfrac{15}{5}}+\dfrac{5\left(1-x\right)}{5}\)
giải pt
1.(x^2-x+1)(X^2-x+2)=2
2.X(x+2)(x+3)(x+5)=280
3.(x+3)(x+4)(X+5)=x
4.\(\dfrac{1}{x\left(x+2\right)}+\dfrac{1}{\left(x+2\right)\left(x+4\right)}+\dfrac{1}{\left(x+4\right)\left(x+6\right)}=\dfrac{1}{9}\) 5. 12/x^2-12/x^2+2=1 6.(x^2-6x)^2+14(x-3)^2=81 7.(x^2+5x)^2-2(x^2+5x)-24=0
8. x^2+2x+3=(x^2+x+1)(X^4+x^2+4)
Giải các phương trình :
a) \(x\left(2x-9\right)=3x\left(x-5\right)\)
b) \(0,5x\left(x-3\right)=\left(x-3\right)\left(1,5x-1\right)\)
c) \(3x-15=2x\left(x-5\right)\)
d) \(\dfrac{3}{7}x-1=\dfrac{1}{7}x\left(3x-7\right)\)
Bài 5: Giải các phương trình sau:
a. (3x - 1)2 - (x + 3)2 = 0
b. x3 = \(\dfrac{x}{49}\)
c. x2 - 7x + 12 = 0
d. 4x2 - 3x -1 = 0
e. x3 - 2x - 4 = 0
f. x3 + 8x2 + 17x +10 = 0
g. x3 + 3x2 + 6x + 4 = 0
h. x3 - 11x2 + 30x = 0
Giải phương trình
\(\dfrac{4+x}{3}-\dfrac{x-\dfrac{x-1}{2}}{2}+\dfrac{x-3}{4}=\dfrac{6-2x}{2}\)
