a: \(\Leftrightarrow-\dfrac{23}{5}\cdot\dfrac{50}{23}< =x< =-\dfrac{12}{5}:\dfrac{7}{5}=\dfrac{-12}{7}\)
=>-10<=x<=-12/7
hay \(x\in\left\{-10;-9;-8;-7;-6;-5;-4;-3;-2\right\}\)
b: \(\Leftrightarrow-\dfrac{13}{3}\cdot\dfrac{1}{3}< =x< =-\dfrac{2}{3}\cdot\dfrac{1}{8}\)
=>-13/9<=x<=-1/12
hay \(x=-1\)
bài 1 : tìm x, biết:
A) X/3 - 1/2 = 1/5 B) x/5 + 1/2 = 6/10 c) x +3 /15 = 1/3 d) x -14/4 =1/4
đ) 1/2 x + 1/2 =5/2 n) -2/3 1/3 ( 2x -5 )=3/2 i) ( 3x -1) ( -1/2 x +5 ) =0 j) x-2/4 = 5+x/3
q) 3/x + 5 = 15% p) | x - 1/3 =5/6 m) 2| 1/2 x - 1/3 | - 3/2 = 1/4
z) ( 4,5 - 2 x) . ( -11/7) = 11/14 y) ( x/7 + 0,25 ) = -1/28
giup minh nhé
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-9/46-4 1/23:(3 1/4 - x:3/5)+2 8/23=1
(6 2/7*x + 3/7):2 1/5-3/7=-1
5 8/17:x+(-1/17):x +3 1/17:17 1/3=4/17
tìm x biết:...........giúp mk vs
a. x/5+1/2=6/10
b. x+3/15=1/3
c. x-12/4=1/2
d. 1/2x+1/2=5/2
e.-2/3-1/3(2x-5)=3/2
f. (3x-1)(-1/2x+5)=0
g. 1/2-2/3x=7/12
h. 3/4x+1/5=1/6
i. 17/12-|2x-3/4|=-7/4
1) tính hợp lí ( nếu có thể )
c) \(\dfrac{2}{-11}\). 6\(\dfrac{2}{7}\)+ \(\dfrac{3}{7}\):3 + 5 d) 1,75 : 5 + 2,5 . ( \(4^2\)- 4. 4,1)
2) tìm x
a) 1/2-x=-1/6 b) x+3,5=7,8-12,6:2 c) 7/35 = 35-x/-105
Bài 1:Tìm x
a, \(2.x-\frac{1}{2}=\frac{5}{4}-\frac{1}{2}.x\)
b, \(\frac{3}{4}-\frac{5}{2}.x=2-3.x\)
c, \(\frac{3}{2}.\left(x-\frac{1}{3}\right)-2\left(x-\frac{1}{2}\right)=3\)
d, \(\frac{4}{3}.\left(x-\frac{3}{2}\right)-3.\left(\frac{1}{3}.x+1\right)=6\)
Bài 1: Tìm x, biết
a)\(\dfrac{-2}{3}\)- \(\dfrac{1}{3}\) (2x-5) = \(\dfrac{3}{2}\)
b)\(\dfrac{2}{5}\) .x +\(\dfrac{1}{2}\) = \(\dfrac{-3}{4}\)
giúp em
x.3 1/4+(-7/6).x-1 2/3=5/12
5 8/17:x+(-4/17):x+3 1/7:17 1/3=4/11
-1 5/27-(3x-7/9)^3=-24/27
3(x-1/2)-5(x+3/5)=-x+1/5
bài 1: Tính hợp lý ( nếu có thể )
A = 7/18 + -1/5 + 11/18 - 4/5
B = 11/27 - (1/4 - 5/6 ) + 1/6 -3/4
Bài 2 Tìm x biết
A) 5/4 .x - 1/6 = 2/3
a. 2/3x-1/2=1/10
b. 39/7:x=13
c. (14/5x-50):2/3=51
d. (x+1/2)(2/3-2x)=0
e. 2/3x-1/2x=5/12
g. (x.44/7+3/7)11/5-3/7=-2
h. x.13/4+(-7/6)x-5/3=5/12
i.93/17:x+(-4/17):x+22/7:52/3=4/11
j. 17/2-|2x-3/4|=-7/4
k. (x+1/5)^2+17/25=26/25
l. -32/27-(3x-7/9)^3=-24/27
