68-273:(6.x+1)=29
<=>273:(6.x+1)=39
<=>6.x+1=7
<=>6.x=6
<=>x=1
----------------------
259-36:3x=16
<=>36:3x=243
<=>3x=36:243
<=>3x=3
<=>3x=31
<=>x=1
-----------------
Đúng đề không bạn nhỉ?
Tìm x biết:
5^x+1 5^2x + 2.5^3x = 875
Tìm x biết:
5^x+1 5^2x + 2.5^3x = 875
4. (x-250):6=43- 22x3
5.2x+3x+5x=1030
6.15x-35x+50x=120
7.1/2x+1/6x+1/3x=2023
8. 165-(35:x+3)x19= 13
cứu mình với,mình cần gấp
A) 78-2x=42
B)6x+39=75
C) 2^3.x+ 2.x=25.2^2
D) 21+7x = 56
E) 5x +2x = 6^2-5^0
F)15x + 3x = 450 : 2+9
G) 6x+x=5^11: 5^9+3^1
H) 5x + 3x=3^11: 3^8.4+12
i) 2^3.x + 2^2.x =136-2^20 : 2^16
j) 7x -x= 5^21: 5^19+3.2^2
k) 7x - 2x= 6^17: 6^15 + 44 :11
l) 0: x =0 m) 3^x=27 n) 4^x= 64
o) 2^x = 32 p) 9^x-1=81 q) x^4=16
r) 3^x :3^
p) 9^x-1=81
q) x^4=165=1
14+(273-7x).2=518
(358-x):5=2.52
60:5x=12
5x+3.54x-52x.53x+2=100
(4x+2)2-1=35
14+(273-7x).2=518
(358-x):5=2.52
60:5x=12
5x+3.54x-52x.53x+2=100
(4x+2)2-1=35
x+2x+3x+3x+4x+5x+6x+7x+8x+9x+10x=-165.tim x
1 6x+x=511:59+31
2 5x+3x=36:33.4+12
3 4x+2x=68-219:216
4 5x+x=39-311
Cho hình tam giác ABC có chu vi = 18cm, cạnh BC = 7,5 cm AB = \(\frac{3}{4}\)AC
Tính diện tích tam giác ABC
1 a)(6x+4).5=200
b,71+(26-3x):5=75
c,4(2X-6)=16
D,5^3+2-2.5^2=5^2.3
2)CHỨNG MINH :(3+3^2+3^3+3^4+3^6)CHIA HETcho 3
