\(5^{2.x-3}-2.5^2=5^2.3< =>5^{2.x-3}-50=75< =>5^{2.x-3}=125< =>5^{2.x-3}=5^3< =>2.x-3=3< =>2.x=6< =>x=3\)
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1) (x + 1/2).(2/3 - 2x) = 0 2) 2/3x + 1/2x = 5/2 : 3 và 3/4 3) (2x - 3)(6 - 2x)= 0 4) -5(x + 1/5) - 1/2(x - 2/3) = 3/2x - 5/6
a,-2\3x+1\5=1\10
b,2|1\2x-3\8|-3\2=1\4
c,-5(x+1\5)-1\2(x-2\3)=3\2x-5\6
d,3(x-1\2)- 5(x+3\5)=-x+1\5
e,3\4-2.|2x-0,125|=2
f,2|1\2x-1\3|-3\2=1\4
g,4\5-1\2x=1\10
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
a) 1/3x + 2/5( x - 1 ) = 0
b) (2x - 3 )(6 - 2x ) =0
c) 2|1/2x - 1/3 | - 3/2 = 1/4
d) 3/4 - 2 . | 2x - 2/3 | = 2
e) ( 3x - 1)(-1/2x + 5 ) = 0
g)-5(x + 1/5 ) - 1/2(x - 2/3 ) = 2/3x - 5/6
h) 3(x - 1/2 ) - 5(x + 3/5 ) = -3 + 1/5
i) 60%x + 2/3x = 1/3. 6và1/3 ( 6và1/3 là hỗn số )
a, 5^x+5^x+2=650 b,(2x+1)*(y-5)=12 c,5^2x-3-2*5^2=5^3*3
Tìm x biết:
a) 12 ( 2x - 6 ) - 43= 5^3
b) 7 ( 25 - 3x ) = 3^4 - 2^5
c) ( 3x - 5 ) + 3^4 = 6^0 = 5^3
d) 3x + 2x ( 2^3 . 5 - 3^2 . 4 ) + 5^2 = 4^4
e) 720 : [ 41 - (2x - 5 ) ] = 2^3 .5
3) Tìm x của N biết a) 80 - ( 2 + 2x ) : 2 = 40 b) 11^2 - 121 = 0 c) 5^x+3 - 7 × 5^2 = 5^2 × 18 d) x^10 = x e) x^10 = 1^x g) ( 2x - 15 )^5 = ( 2x - 15 )^3 4) Thực hiện phép tính a) 5^3 ÷ 5^2 + 2^2 × 3 b) 4^3 × 125 - 125 ÷ 5^2 c) 6^2 × 28 + 72 × 6^2 d) 5^6 ÷ 5^4 + 3 × 3^2 - 80 e) 2^3 × 19 - 2^3 × 14 × 1^2021
5(7+48:x)=45
5^2x-3-2*5^2=5^2*3
2+x:5=6
10+2x=4^5:4^3
a) 5^x=125
b)3^2x=81
c)5^2x-3-2*5^2=5^2*3
Tìm x :
A)2x-3/7=6 2/7
B)3 1/3+5/6x=3 1/2
C)2x+30%.x=-4 3/5
D)2/3-|x-1/5|=5/9
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