mình viết lộn đề :
2/3 . x/4 = 8/10 - 1/2 . x - 5
mình viết lộn đề :
2/3 . x/4 = 8/10 - 1/2 . x - 5
\(b) 5^{x+4} - 3 . 5^{x+3} = 2. 5^{11} \)
\(c) 2 . 3^{x+2} + 4 . 3^{x+1} = 10 . 3 ^{6}\)
\(d) 6 . 8 ^ {x-1} + 8 ^ {x+1} = 6 . 8^ {19} + 8 ^ {21}\)
a,5^x+4-3×5^x+3=2×5^11
b,3×5^x+2+4×5^x-3=19×5^10
c,6×8^x-1+8^x-1=6×8^19+8^21
d,5×2^x+3×2^x+2=5×2^5+3×2^7
Tìm x,biết:
a,3 / (x+2).(x+5) + 5 / (x+5).(x+10) + 7 / (x+10) . (x+17)= x / (x+2).(x+17)
x∉{-2 ; -5 ;-10 ; -17}
b,2 / (x-1). (x-3)+5 / (x-3).(x-8)+12 / (x-8).(x-20)-1 / x-20=-3/4
x∉{1;3;8;20}
c,x-1/2009 + x-2/2008 = x-3/2007 + x-4 / 2006
Tìm x, biết:
a) 3/(x+2)(x+5) + 5/(x+5)(x+10) + 7/ (x+10)(x+7) = x/(x+2)(x+17) với x thuộc {-2,-5,-10,-17}
b) 2/(x-1)(x-3 + 5/(x-3)(x-8) + 12/(x-8)(x-20) -1/x-20 =-3/4 với x thuộc {1,3,8,,20}
1. Tìm x biết:
a) | 3/2.x + 1/2 | = | 4x - 1 |
b) | 5/4.x - 7/2 | - | 5/8.x + 3/5 | = 10
c) | 7/5.x + 2/3 | = | 4/5.x - 1/4 |
1/7=8/-x
3x/9=2/6
4/2/5:(-33/10)+x=-1/5/6
(x-2/1/4):(-5/6)=3
-8:(4/1/5x+3/10)=4/4/9
(5,5x-44):(-3/2)=30
(13/10x-15).(-5/14)=3
1/3.(x+5/2)=-2
chu y dau( //)la so tap phan con dau( /) la phan so
Tìm X:
a, 3/7- (2/5 + X + 3/2) = 5/14 - /4/35 - (-11)/70 /
b,3/4(x-8) = 5/7.(4-1/2)
c,3/2 - 4(1/4 - x) = 2/3 - 7x
d,4.(1/2-x) - 5.(x-3/10) = 7/4
a) |x - 1/2 |= 1/3
b) 14/15 : 9/10= x : 3/7
c) 6/5 : 8 = 2/5 : x
d) 3x - 7 / 8 = 5/2
e) x/2 = 8/x
g) 5/9 :x = 7/4 : 3/10
giúp mk vs mk tick cho
x2= 1
x2=3
x2=5 với x<0
x2=7 với x<0
x2=9
(x-2)2=2
(x-4)2=4
(x-6)2=6
(x-8)2=8
(x-10)2=10
(x-\(\sqrt{3}\) )2=3
(x-\(\sqrt{5}\))2=5