2x - 23. 33 = 138
2x - 8 . 27 = 138
2x - 216 = 138
2x = 138 + 216
2x = 354
2x = 354 : 2
x = 177
vậy x = 177
( 6x - 34 ) . 73 = 3 . 74
( 6x - 81 ) . 343 = 3 . 2401
( 6x - 81 ) . 343 = 7203
6x - 81 = 7203 : 343
6x - 81 = 21
6x = 21 + 81
6x = 102
x = 102 : 6
x = 17
vậy x = 17
tim x
a,2x-138=2^3.3^2
b,20-[7.(x-3)+4]=2
c,[6x-39]*3.28=5628
Tìm x
A) 2.x-23.32=138
B) (6.x-34).73=3.74
Tìm xA) 2.x-23.32=138
B) (6.x-34).73=3.74
Tìm x
A) 2.x-23.32=138
B) (6.x-34).73=3.72
Tìm x , biết
a) 2.x-138=2^3.3^2
b) ( 3.x-2^4) .7^2=2.7^4
2^2.4^4.2^6.2.2=
2.2^3.2^7.2^4=
3^2.3=
3^4.3^3.3=
3.3^5.3^4.3^2=
3.3^6.3^7.3^4=
4.4^3=
4^5.4.4^7=
4.4^3.4^5.4^6=
5.5^6
5.5^4=
5.5^2.5^4=
5.5^3.5^4.5^6=
5.5^6.5^4.5^3=
x.x^2
x.x^3.x^5=
a.a^4
a.a^2.a^4.a^5.a^7=
a.a^3.a^5.a^6
a^4.a.a^5.a^6.a=
x.x^3.x^4=
x^5.x^4.x.x^7.x^6=
7.7^2=
7.7^2.7^4.7^5=
7^3.7^5.7.7^4=
7^2.7.7^6.7^6.7^3=
10.10^2=
10.10^2=
10.100.10^3=
10.100.10^4.1000=
10^2.10^4.100.1000=
(6x-3^4)7^13=3.7^14
3.3^3+7^49:7^47
b)25.{32:[12-2^2+4.(16:2^3)]}
c)5^3+(3^4+4).2+(27-3):4
tim x
a)5.(12-x)-20=30
b) (50-6x ).18=2^3.3^2.5
tinh
s=3+6+...+2016
tim chu so tan cung cua 7^9+3
so sanh
a=1+2+2^2+2^3+2^4+...+2016
b=2^2017-1
kí hiệu ^ đây là mũ nhé mấy bạn