|x|-5=-1
|x|=-1+5
|x|=4
vay x=4 hoac x=-4
k mk nha
| x | - 5 = - 1
| x | = - 1 + 5
| x | = 4
=> x = 4 hoặc x = - 4
a,1/3 .(x-2/5)=3/4 b, 7/3:(x-2/3)=4/5 c,1/3.(x-2/5)=4/5 d, 2/3.(x-1/2)-1/4.(x-2/5)=7/3 e,3/7 .(x-2/3)+1/2=5/4.(x-2) f,1/2.(x-3)+1/3.(x-4)+1/4.(x-5)=1/5 g,[2/3.(x-1/2)-4/5]:(x-1/3)=21/5 h, {x-[1/2.(x-3)+11/5]}:(x-1/2)=3/5 i,x.(x-2/5)-(x+2).x+11/4=4/3
A=(1-1/5)x(1-2/5)x(1-3/5)x(1-4/5)x...x(1-9/5)
Tìm x
a, ( 3 . x -1 ) . ( -1/2 .x + 5 ) = 0
b, 3. ( x - 1/2 ) - 5 ( x + 3 /5 ) = x + 1 /5
c, -5 . ( x + 1/5 ) - 1/2 . ( x - 2/3 ) = 3/2 . x - 5/6
d,3. ( 3 . x - 1/2 ) mũ 3 + 1/9 = 0
1) 2³ .x -5² x = 2( 5² + 2² ) -33. 2) 15÷ ( x +2) = (3³ +3) ÷1
3) 20÷ (x +1) = (5² +1 ) ÷13. 4) 320÷ ( x -1 ) = (5³ - 5² ) ÷4 +15
5) 240 ÷ ( x -5 ) = 2² .5² -20. 6) 70 ÷ ( x -3) = ( 3⁴ -1) ÷ 4 - 10
Giúp mình với mình Tối nay mình đi học rồi
(1 - 1/5 ) x (1 - 2/5) x (1 x 3/5) ... (1 x 2005/5)
Bài 1:
a, -5 . ( x + 1/5 ) - 1/2 .( x - 2/3 ) = 3/2 . x ( -5/6)
b, 3 . (x . -1/2 ) - 5 . (x + 3/5)= -x +1/5
Tìm x:
-12(x-5)+7(3-x)=5
30(x+2)-6(x-5)-24x=100
-5(x+1/5)-1/2(x-2/3)=3/2x-5/6
3(x-1/2)-5(x+3/5)=-x+1/5
I20/9-xI=1/12+1/20+1/30+1/42+1/56+1/72
Giúp mình nhanh nhé,mai mình nộp cho cô rồi
tìm x
a) 3(x-1/2)-5(x+3/5)=-x+1/5
b) -5(x+1/5)-1/2(x-2/3)=3/2.-5/6
c) (3x-1)(-1/2x+5)=0
tìm x
a) 3(x-1/2)-5(x+3/5)=-x+1/5
b) -5(x+1/5)-1/2(x-2/3)=3/2.-5/6
c) (3x-1)(-1/2x+5)=0
Bài 2: Tìm x
a) x - 2/11 = -5/11
b) x - 1/24 = -1/8 + 5/6
c) 5/8 - x = 1/9 - (-5/4)
d) 8/23 . 46/24 - x = 1/3
e) 1/5 : x = 1/5 + 1/7
