Tìm x:
a)(2x- 6)7 = (2x-6)5
b) (7- 2x)9 = (7- 2x)3
1,Tìm x
5^x-5^x+2=650
2x-3/11+2x-4/12+2x-5/13=2x-6/14+2x-7/15+2x-8/6
2. tìm x
a) \(\left(x-1\right)^3=8\)
b) \(7^{2x-6}=49\)
c) \(\left(2x-14\right)^7=128\)
d) \(x^4.x^5=5^3.5^6\)
e) \(\left[3.\left(x+2\right):7\right].4=120\)
tìm x:
a, (2x-5)^3=216
b, 2x-3 chia hết cho x+4( với x thuộc z)
c,|x-18|-2x+14=47
d,1 phần 6+ 5 phần 6:x = 7 phần12
(3x-7-2x):(6+2x-9)=7-2(x+1)
a,x - 1/2 - (-1/6)
b,x + 5/6 = 3/8
c,2/3 . x -1/2 = 5/6
d, x/7 = 6/-21
e,(7/3 x -0,6) : 3^2/5 = 1
f,x/45 = 5/6 + -29/30
g,(4,5 - 2x) . (-1^4/7) =11/14
h,-2/7 + 4/7x=5/7
tìm số nguyên x biết
a, 2x+1/3=x-5/2 b, 4(x-2) ^2/3=12
25/30=2x+3/6 -7/x+1=6/x+27
Tìm x:
a,(15-x)+(x-12) = 7-(-8+x)
b,3.(x+2) - 6.(x-5) = 2.(5-2x)
c,(-12+x) - (2x+31) = (-6)-5
d,-2.(2x-8)+3.(4-2x) = -72-5.(3x-7)
e,2x+1 chia hết x-3
g,-2x-11 chia hết 3x+2
Các bạn làm giúp mình nha! Thanks!!!! ^_^ :D :)))
Tìm x biet:
a,5/2x+x=32/15
b,x-7/2x=-32/15
c,-7/3x-7/4x+11/3=18/5
d,-5/6-3x=2/3
e,2x-5/9=-2/3
f,1/2-2/3x=7/12
g,7-|2x-3|=4
h,(19x+2.5^2):14=(13-8)^2-4^2
i,3/4x-2/3=2/7.1/6+5/7.1/6
k,(x+1/2).(2/3-2x)=0
l,x/2013-1/10-1/15-1/21-........-1/120=5/8
tìm số nguyên x biet
-2.(x+6)+6.(x-10)=8
x+5=20-(12-7)
(3x-9).(2x+6)=0
(2x+1).(3-x)=0