Tìm x biết :1)-2/3(x-1/4)=1/3(2x-1)
2)1/5.2x+1/3.2x+1=1/5.2x+1+1/3.28
-2/3.(x-4)=1/3.(2x-1)
1/5.2x+1/3.2x+1=1/5.27+1/3.28
GIÚP EM !
Tìm x:
a) (2x - 1) . 3^4 = 3^7
b) 2^x+1 + 4.2^x = 3.2^12
LÀM 1 CÂU THÔI CŨNG ĐC ẠK!!
1) 5.2²+ (x+3)=5² 6) 4³ - (x-2)=5²
2) 2³+(x-3²)= 5³-4³ 7) 3⁴+ (x+5)=5.3²
3) 3.2 + (x+5²)=10² 8) 2³.5 - (x+ 3²)=10
4) 2⁶+(5+x)= 3⁴ 9) 3³ - (x+2⁴)=7
5) 5+(x + 3³)= 2⁶ 10) 7² - (15+x)=5.2²
Tìm X <- N biết
a) 32 - 4 . ( 90 : x - 8 ) = 24
b) 3 . ( x + 5 ) + 2 . ( x + 10 ) = 100
c) 3 . ( x - 2 ) + 17 = 2 . ( x + 8 )
d) ( x + 1 ) + ( x + 4 ) + ( x + 7 ) + ..... + ( x + 1996 ) = 666999
e) x + ( x + 1 ) + ( x + 2 ) + ( x + 3 ) + .... + ( x + 30 ) = 1240
6x+2+6x=1332
2.3x+1-3x=135
3x(3.2-1)=5
2.3x+1-3x=135
1) Tính :
a) 60 + { 75 - [ 30 + ( 5 - 3 )2 ] }
b) 3.22 + 54 : 20
2) Tìm x :
a) x - 24 : 12 = 15
b) ( x - 24 ) : 12
c) 2 ( x + 1 ) - 15 = 35
d) 36 + 4x = 56
tìm x tm 1/5*2x +1/3.2x +1 =1/5 . 27 +1/3 . 28
tìm x thuộc z,biết:
a.4^x+3=32768
b.2^x+2^x+1-3.2^x+2=72
c.(x+2y-1)^2+(x-5)^4=0
