3x-(x-5)=25
=> 3x-x+5=25
=> 2x=25-5
=> 2x=20
=> x=20:2
=> x= 10
3x-(x-5)=25
=> 3x-x+5=25
=> 2x=25-5
=> 2x=20
=> x=20:2
=> x= 10
Tìm x biết
a) x − 1 6 − 6 16 = 25 %
b) 3 x − 1 − 1 2 x + 5 = 0
Tìm x biết:
2x + 3x = 5 mũ 6 ÷ 25
Tìm x biết
a, 3x - 35 = 25 + 3 . ( - 5)
b, | x - 2| = 0
c, x/5 = 5/6 + -13/30
Tìm x biết (3x - 2) : 25/7 = 7/5
Tìm x, biết:
a, 70 - 5 ( x - 3 ) = 45
b, 10 + 2 x = 4 5 : 4 3
c, 60 - 3 x - 2 = 51
d, 4 x - 20 = 2 5 : 2 3
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
Tìm x biết:
a. x-(17-8)=5+(10-3x)
b. 25-(30+x)=x-(27-8)
c. (x-12)-15=(20-7)-(18+x)
Tìm x biết
a) (x-1/2)^2=4
b) 10/1/2-(x+1/3)^2=1/1/2
c) (x-1/5)^2+17/25=26/25
d) 1/5/27+(3x-7/9)^3=24/27
Tìm x, biết :
a. 70 - 5. ( x - 3 ) = 45
b. 10 + 2.x = 45 : 43
c. 60 - 3 .x - 2 = 51
d. 4.x - 20 = 25 : 23
e. 2x.4 = 16
f. 3x.3 = 243
g. 64.4x = 168
h. 2x.162 = 1024