Tìm x
2.x-138=2^3.3^2
Tìm x biết 2.x-138=\(2^3.3^2\)
tìm x tự nhiên x ,biết:
a) 2.x-138=2^3.3^2
b) 231-(x-6)=1339:13
a,2x-138=72 231-(x-6)=103
x-6 =231-103
2x =72+138 x-6 =128
2x =210 x =128+6
x =210/2 x =134
x =105
tìm số tự nhiên x, biết:
a/ 2x-138=2^3.3^2
b/ 231-(x-6)=1339:13
a. 2x-138=23.32
=> 2x-138=8.9
=> 2x-138=72
=> 2x=72+138
=> 2x=210
=> x=210:2
=> x=105
b. 231-(x-6)=1339:13
=> 231-(x-6)=103
=> x-6=231-103
=> x-6=128
=> x=128+6
=> x=134
2.x -138=2^3.3^2
2.x -138=2^3.3^2
2.x - 138 = 72
2x = 72 + 138 = 210
x= 210 : 2
V x= 105
k mk nhe!!
TL
x=105
Hok tốt nha bn
Nhớ k cho mik nha
#Kirito
2.X-138= 2^3.3^2
2.X - 138 = 23 . 32
2.X - 138 = 8 . 9
2.X - 138 = 72
2.X = 72 + 138
2.X = 210
X = 210 : 2
X = 105
2.x-138=2^3.3^2
2.x-138=72
x-138=72:2
x-138=36
x=36+138
x=174
2.x-138=2^3.3^2
2.x-138=23.32
2.x-138=72
2.x =72+138
2.x =210
x =210:2
x =105
Ok!
Tìm x , biết
a) 2.x-138=2^3.3^2
b) ( 3.x-2^4) .7^2=2.7^4
a ) 2x - 138 = 2 ^ 3 . 3 ^ 2
2x - 138 = 8 . 9
2x - 138 = 72
2x = 210
x = 105
b ) ( 3x - 2 ^ 4 ) . 7 ^ 2 = 2 . 7 ^ 4
( 3x - 16 ) . 49 = 4802
( 3x - 16 ) = 98
3x = 114
x = 38
tính
125.16.3+80.25.7
293+96.14+96.86+107
tìm x biết 2x-138=2^3.3^2
125.16.3+80.25.7
25.5.16.3+25.80.7
25.240+25.560
25.(240+560)
25.800
20000
293+96.14+96.86+107
293+96.(14+86)+107
293+96.100+107
293+9600+107
9893+107
10000
2x-138=2^3.3^2
2x-138=72
2x=72+138
2x=210
x=210:2
x=105
vay x=105
nhớ **** cho mình nha
tìm x
A: 2x-5=9
B:5x-138=\(2^3.3^2\)
a) 2x - 5 = 9
2x = 14
x = 7
b) 5x - 138 = 23 . 32
5x - 138 = 72
5x = 210
x = 42
A) 2x - 5 = 9
2x = 9 + 5
2x = 14
x = 14 : 2
x = 7
B) 5x - 138 = \(2^3.3^2\)
5x - 138 = 8 . 9
5x - 138 = 72
5x = 72 + 138
5x = 210
5x= 210