x-\(\frac{1}{2}\)\(\times\)5=0\(\Leftrightarrow\)x-\(\frac{5}{2}\)=0\(\Leftrightarrow\)x=0+\(\frac{5}{2}\)\(\Leftrightarrow\)x=\(\frac{5}{2}\)
\(x-\frac{1}{2}.5=0\)
\(x-\frac{1}{2}=0\)
\(x=0+\frac{1}{2}\)
\(\Rightarrow x=\frac{1}{2}\)
x-\(\frac{1}{2}\)\(\times\)5=0\(\Leftrightarrow\)x-\(\frac{5}{2}\)=0\(\Leftrightarrow\)x=0+\(\frac{5}{2}\)\(\Leftrightarrow\)x=\(\frac{5}{2}\)
\(x-\frac{1}{2}.5=0\)
\(x-\frac{1}{2}=0\)
\(x=0+\frac{1}{2}\)
\(\Rightarrow x=\frac{1}{2}\)
a) -5 (2x + 6 ) +b | 3x + 9 | = 7x
b) 7(x - 4 ) - | 4x - 12 | = 0
c) | x - 5 | - | x - 3 | =0
d)| x + 1| + | -x + 12 | = 2x -7
e) | x + 2| - | x + 6 | - (-15) = 0
f) | 2x- 10 | + | 3y - 4 | = 0
g) | - 3x + 1 | - | 2x + 8 | + 3x = 0
h) 3( x - 1 ) - 5 | x + 3 | = 0
Bài 1 :
A) -12(x-5)+7(3-x)=5
B) (x-2).(x+4)=0
C) (x-2).(x+15)=0
|x+1|+|x-2|+|x+3|+6
|x-1|+3-|x-2|-2|x-2|=4
|5x-1|+|6y-8|≤0
|3-2x|+|4y+5|=0
Tìm x:
a)12/16 = -x/4 = 21/y = z/80
b) 1/3.x+2/5.(x-1)=0
c) (2x-3).(6-2x)=0
d) -2/3-1/3.(2x-5)= 3/2
e) 2|1/2.x-1/3|-3/2=1/4
f) 1/3.x-1/2=4 và 1/2 (Hỗn số ý '^')
1/3x+2/5(x-1)=0
c)(2,8.x-32):40%=9/5
d)(3/2.x-1/2)^2=16/25
e)2/3.x+4/5.x+-3/5-50%
f)65-4^x+2=2020^0 giúp vs ạ
Tìm x,biết:
a)2^x+1 . 2 mũ2009= 2 mũ2010
b)7x - 2x=6 mũ17 ; 6 mũ15+44:11
c)0:x=0. ; 3 mũ x=9
d)x mũ4=16 ;2 mũ x : 2mũ5=1
e)|x-2|=0 ; |x-5|=7-(-3)
g)4 mũ x=64. ; 9 mũ x-1=9
Mình đang cần gấp bạn nào làm nhanh thì mình like nha!
Bài 1:
a) 6/7.x=-5/28 ; b) 2/5 +1/4 .x=-0,3
Bài 2:Cho phân số a/b với a,b >0.Chứng minh:
a/b + b/a lớn hơn hoặc bàng 0
Bài 1: Tìm x, biết:
a) x- 3/4 = 1/2
b) 3/4 : x = 1/2
c) (3-x) . (x + 4/5) = 0