`# \text {nKaiz}`
`-4/5*x - (0,25 - x) = -13/3`
`=> -4/5x - 0,25 + x = -13/3`
`=> -4/5x + x = -13/3 + 0,25`
`=> 1/5x = -49/12`
`=> x = -49/12 \div 1/5`
`=> x = -245/12`
Vậy, `x = -245/12.`
a) -3/2 - 2x + 3/4 = 2
b) x/2 - (3x/5 - 13/5) = -(7/5 + 7/10 .x)
c) 2/3x - 3/12 = 4/5 - (7/x - x)
d) 3 - 2/2x-3 = 2/5 + 2/9-6x - 3/2
SẼ TICK NẾU XONG TỐI NAY
Tìm x, biết
a. x + \(\dfrac{3}{10}=\dfrac{-2}{15}\)
b. \(\dfrac{-11}{12}x+0,25=\dfrac{5}{6}\)
c. x + (x+1)+(x+2)+........................+(x+2002)=2004
-4/13 x 5/17 + -12/13 x 4/17 + 4/13
thực hiện phép tính
mn giúp vs mk đag rất gấp
Tính bằng cách hợp lí :
S= 3/4 - 0,25 - [ 7/3 + ( -9/2 )] - 5/6
1. Thực hiện phép tính:
a. 3/4 + -1/8 b. -5/12 + -7/24 c. 4/21 - -5/28 d 1 + -7/28 e. -4/3 - 17/6 f. 1/3 - ( 1/2 +1/8 )
g. 1/21 - ( 1/7 - 1/3 ) h. 1/2 - 1/4 + 1/13 + 1/8
2. Tìm x
a. x - 1/10 = 1/15 b. -4/21 - x = -3/7 c. x + 1/2 = 3/4 - (-1/2) d. 4/7 - x = 1/3 - (-2/3)
mk viết kiểu này 2/3 là 2 phần 3 nha
Giúp mk lun nha mk cần gấp lắm
c )\(\dfrac{x}{2}-\left(\dfrac{3x}{5}-\dfrac{13}{5}\right)=-\left(\dfrac{7}{5}+\dfrac{7}{10}.x\right)\)
d)\(\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
g) \(3-\dfrac{2}{2x-3}=\dfrac{2}{5}=\dfrac{2}{9-6x}-\dfrac{3}{2}\)
h) \(\dfrac{x}{2}-\dfrac{1}{x}=\dfrac{1}{12}\)
i) \(x^2-\dfrac{7}{6}x+\dfrac{1}{3}=0\)
k) \(\dfrac{13}{x-1}+\dfrac{5}{2x-2}-\dfrac{6}{3x-3}\)
m) \(\left(\dfrac{3}{2}-\dfrac{2}{-5}\right):x-\dfrac{1}{2}=\dfrac{3}{2}\)
n) \(\left(\dfrac{3}{2}-\dfrac{5}{11}-\dfrac{3}{13}\right)\left(2x-2\right)=\left(-\dfrac{3}{4}+\dfrac{5}{22}+\dfrac{3}{26}\right)\)
h) \(\dfrac{x}{2}-\dfrac{1}{x}=\dfrac{1}{12}\)
i) \(x^2-\dfrac{7}{6}x+\dfrac{1}{3}=0\)
k) \(\dfrac{13}{x-1}+\dfrac{5}{2x-2}-\dfrac{6}{3x-3}\)
tìm x , biết
a) 17/6- x( x-7/6)= 7/4
b) 3/35 - ( 3/5-x)= 2/7
tìm x thuộc Z , biết
3/4-5/6 < x/12 < 1 -( 2/3-1/4)
tìm x biết
a ) 2x-3=x + 1/2
b) 4x- ( x+ 1/2) = 2x - ( 1/2 - 5 )
