(3x+1)-17=5
(3x+1)=5+17
(3x+1)=22
3x=22-1
3x=21
x=21:3
x=7
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Tìm x € N,biết:
a)8.(x-5)+17=17
b)125-5.(3x-1)=5^5:5^3
c)4^x+1 +4^()=65
Tìm x€N,biết
a)8.(x-5)+17=17
b)125-5.(3x-1)=5^5:5^3
c)4^x+1 +4^()=65
tìm x:
- ( 3x + 1 ) . ( 8 - 5 ) = ( 2x + 1 ) . ( - 3 )
2x + 15 = 3x - 17
3x - 11 = x + 31
Tìm x biết
d) 32%-0,25:x=-17/5
e)(x+1/5)^2+17/25=26/25
f)-32/27-(3x-7/9)^3=-24/27
g)60%x+0,4x+x:3=2
h)|20/9-x|=1/12+1/20+1/30+1/42+1/56+1/72
i)8/5+(2/7+2/17+2/37/5/7+5/17+5/37).x=16/5
Lưu ý: câu i 2/7+2/17+2/37 phần(vế trên) 5/7+5/17+5/37(vế dưới)
1/ (2x - 5) +17 =6
2/ 10 - 2(4 - 3x) = - 4
3/- 12 +3(- x + 7) = -18
4/ 24 :(3x - 2)= - 3
5/ - 45 :5.(- 3- 2x) = 3
Tìm số nguyên x, biết:
1) -16 + 23 + x = - 16
2) 2x – 35 = 15
3) 3x + 17 = 12
4) (2x – 5) + 17 = 6
5) 10 – 2(4 – 3x) = -4
6) - 12 + 3(-x + 7) = -18
tìm x biết:
(3x-1) [- 1/2x+5]=0
1/4+1/3:(2x-1)=-5
[2x+3/5]2 - 9/25=0
-5(x+1/5)-1/2(x-2/3)=3/2x - 5 /6
[x+1/2]x [2/3-2x]=0
17/2-|2x-3/4|=-7/4
2/3x-1/2x =5/12
(x+1/5)2+17/25=26/25
[x.44/7+3/7].11/5-3/7=-2
3[3x-1/2]+1/9=0
Tim x
15-(2x+1)=17-(3x-5)
a) -3000 : 2 + 5(2x-1) = 125
b) 6x -12 = -18
c) 17 + 3(x-1) = 5
d) (x-5) (3x-6) = 0