0,5.x-2/3.x=5/12
(0,5-2/3).x =5/12
(-1/6).x =5/12
x =5/12:(-1/6)
x =-5/2
Vậy x=-5/2
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Tìm x, biết:
a) x+\(\dfrac{1}{6}\)=\(\dfrac{-3}{8}\) b) \(2-\left(\dfrac{3}{4}-x\right)=\dfrac{7}{12}\)
c) \(\dfrac{1}{2}x\)+\(\dfrac{1}{8}x=\dfrac{3}{4}\) d) 75%-\(1\dfrac{1}{2}+0,5:\dfrac{5}{12}-\left(\dfrac{-1}{2}\right)^2\)
Tìm x:
a) 1/3 .x +2/5 (x+1)=0
b)2/3.x+1/4= 7/12
c) 3/5. x -1/2=1/7
d)1/4 + 1/3 :3x = -5
e) 1 - ( 5 3/8 + x - 7 5/24)=0
f) x - 25%x = 0,5
Tìm x , biết :
0,5.x - \(\frac{2}{3}.x=\frac{5}{12}\)
giúp mk với
0,5 x-2/3 x bang 5/12
tìm x:
a) 1/2.x+3/5.(x-2)= 3
b)1/3.x-0,5.x= 0,75
c)3/-2.x-0,5.x=75%
d)-2/5.x+1/4=75%-3/4.x
1. Tính:
a. 3/7 + 1/7 x 4/5 - 1
b. (3/20 + 1/2 - 1/15) x 12/49
______________________
7/2 + 2/9
c. 18 x (19191919/21212121 + 88888/99999)
2. Tìm x, biết:
a. 3/5 : x - 4/5 x 3/2 = 1/2
b. 1- (X x 0,5 + X : 4 x 3) : 0,25 = 0,2
a) 3/4 - 1/1/2 + 0,5 : 5/12
b) ( -2)2 - 1/5/27 . ( -3/2 )
c) 2/2.3 + 2/3.4 + ...+ 2/99.100
tìm x
a) x - 43 = ( 57-x) -50
b) / 5x-2 / \(\le\)0
tìm x, biết
a, x + \(\frac{5}{12}\)= -1\(\frac{2}{7}\)
b, 4\(\frac{1}{2}\)x : \(\frac{5}{12}\)= 0,5
c, 7,5 .1\(\frac{3}{4}\)x = 6\(\frac{2}{5}\)
Bài 1: Tìm x :A) 3/4.(x-2) - 1/2.(6-2.x)= 1/6.x + 5
B) -1/2.(3.x + 5) - 2/3.(9-6.x) = 3/5.(x-10) - 3
C) (1/4.x - 1,5) + (5/6.x - 3) - (5/8.x -0,5) = -4,5