23x - 111 = 4
23x = 4 +111
23x = 115
x = 115 : 23
x = 5
23x-111=4
23x =4+111
23x =115
x =115:23
x = 5
:v
23x -111 = 4
23x = 4 + 111
23x = 115
x = 115 :23
x= 5
23x - 111 = 4
23x = 4 +111
23x = 115
x = 115 : 23
x = 5
23x-111=4
23x =4+111
23x =115
x =115:23
x = 5
:v
23x -111 = 4
23x = 4 + 111
23x = 115
x = 115 :23
x= 5
câu hỏi 23x+4=73
3.(x+4)= 23x+2
Tìm x biết:
a , x - 1 3 = 2 3 c , 2 3 x - 1 2 = - 1 b , 2 3 x - 1 2 = - 1
Tìm số tự nhiên x, biết:
a) 18-(2x+5)=9
b) 23x-4 = 32
c) (3x+2)2 =64
d) x(2x - 12) = 0
1) Tim so tu nhien nho nhat chia het cho 1 ; 2 ; 3 ; 4 ; 5 ; 6 ; 7 ; 8 ; 9
2) Phan tich cac so sau ra thua so nguyen to : 111 ; 1 111 ; 11 111 ; 111 111 ; 1 111 111 ?
Tìm số tự nhiên x biết:
a) x - 32 : 16 = 48 b) 88 - 3 . 7 + x = 64
c) 5 + 4 x : 3 - 121 : 11 = 4 d) 15 - 2 3 x + 1 = 11 . 13 - 130
\(A=\frac{\frac{4}{111}+\frac{4}{123}-\frac{4}{999}}{\frac{2}{111}+\frac{2}{123}-\frac{2}{999}}\)
tim x,y biet
1/5x-y=13
2/23x+53y=109
3/12x-5y=21
4/12x+17y=41
\(\frac{4}{\frac{111}{\frac{2}{111}+}}+\frac{4}{\frac{123}{\frac{2}{123}+}}+\frac{4}{\frac{999}{\frac{2}{999}}}\)