\(\text{b)3+x-5=}6x-4\Leftrightarrow x-6x=-4+5-3\Leftrightarrow-5x=-2\Leftrightarrow x=\dfrac{2}{5}\)
vậy S=\(\left\{\dfrac{2}{5}\right\}\)
\(\text{b)3+x-5=}6x-4\Leftrightarrow x-6x=-4+5-3\Leftrightarrow-5x=-2\Leftrightarrow x=\dfrac{2}{5}\)
vậy S=\(\left\{\dfrac{2}{5}\right\}\)
1, giải phương trình
a, 2( x - 0,5 ) + 3 = 0,25(4x - 1 )
b , 2.\(\left(x-\dfrac{1}{4}\right)-4=-6\left(-\dfrac{1}{3}x+0,5\right)+2\)
2, giải các phương trình
a, \(\dfrac{3x-2}{2}=\dfrac{1-2x}{3}\)
b, \(\dfrac{x-1}{3}+2=3-\dfrac{2x+5}{4}\)
c, \(\dfrac{x-1}{5}+x=\dfrac{x+1}{7}\)
d, 2(x - 2,5 ) = 0,25 +\(\dfrac{4x-3}{8}\)
các bạn ơi ! giúp mik với ! mai kiểm tra rồi
1. Giải các phương trình
b) 3+ (x-5)=2(3x-2) c) 2(x-0.5)+3=0.25(4x-1)
d) 2(x-\(\dfrac{1}{4}\))-4=-6(-\(\dfrac{1}{3}\)x+0.5)+2
Giải các phương trình sau :
a) \(\dfrac{5\left(x-1\right)+2}{6}-\dfrac{7x-1}{4}=\dfrac{2\left(2x+1\right)}{7}-5\)
b) \(\dfrac{3\left(x-3\right)}{4}+\dfrac{4x-10,5}{10}=\dfrac{3\left(x+1\right)}{5}+6\)
c) \(\dfrac{2\left(3x+1\right)+1}{4}-5=\dfrac{2\left(3x-1\right)}{5}-\dfrac{3x+2}{10}\)
d) \(\dfrac{x+1}{3}+\dfrac{3\left(2x+1\right)}{4}=\dfrac{2x+3\left(x+1\right)}{6}+\dfrac{7+12x}{12}\)
bài 3giải các phương trình sau
b,\(\dfrac{2x}{3}=8\)
d,\(\dfrac{6}{5}x=-9\)
f,\(\dfrac{2-3x}{4}=\dfrac{4x-5}{5}\)
h,\(\dfrac{10-3x}{2}=\dfrac{6x+1}{3}\)
giải phương trình:
a. ( 2x-1 )3 + 6(3x-1)2 = 2( x+1) 3 + 6(x+2)3
b.(x-2)2 + (3-2x)2- (4x-4) (x-5)= (x+3)2
c. x-3+ \(\dfrac{2\left(x-3\right)-1}{3}\)=\(\dfrac{3-x}{4}\)
d. \(\dfrac{\dfrac{x+4}{3}-1}{7}=\dfrac{\dfrac{2-x}{7}+x}{3}+x+1\)
Giải các phương trình sau:
a, \(\dfrac{3\left(5x-2\right)}{4}-2=\dfrac{7x}{3}-5\left(x-7\right)\)
b, \(\dfrac{x+5}{2}+\dfrac{3-2x}{4}=x-\dfrac{7+x}{6}\)
c, \(\dfrac{x-3}{11}+\dfrac{x+1}{3}=\dfrac{x+7}{9}-1\)
d, \(\dfrac{3x-0,4}{2}+\dfrac{1,5-2x}{3}=\dfrac{x+0,5}{5}\)
Giải các phương trình :
a) \(\dfrac{5x-2}{3}=\dfrac{5-3x}{2}\)
b) \(\dfrac{10x+3}{12}=1+\dfrac{6+8x}{9}\)
c) \(\dfrac{7x-1}{6}+2x=\dfrac{16-x}{5}\)
d) \(4\left(0,5-1,5x\right)=-\dfrac{5x-6}{3}\)
1,\(\dfrac{5\left(x-1\right)+2}{6}\)-\(\dfrac{7x-1}{4x}\)=\(\dfrac{2\left(2x+1\right)}{7}\)-5
2,\(\dfrac{3\left(x-3\right)}{4}\)+\(\dfrac{4x-10,5}{10}\)=\(\dfrac{3 \left(x+1\right)}{5}\)+6
3,\(\dfrac{2\left(3x+1\right)+1}{4}\)-5=\(\dfrac{2\left(3x-1\right)}{5}\)-\(\dfrac{3x+2}{10}\)
Diễn giải ra cho em với ạ!Em cảm ơn
Giải phương trình về dạng ax + b = 0
1. (3x - 2)/3 - 2 = (4x + 1)/4
2. (x - 3)/4 + ( 2x - 1 )/3 = (2 - x)/6
3. 1/2 (x + 1) + 1/4(x + 3) = 3 - 1/3 (x + 2)
4 (x + 4)/5 - x + 4 = x/3 - (x - 2)/2
5. (4 - 5x)/6 = 2 (-x + 1)/2