Các câu hỏi tương tự
Tim x biet (x-3) + (x-2) + (x-1) + ... + 10 + 11 = 11
tim x biet:
(x-3)+(x-2)+(x-1)+....+10+11=11
tim x biet : (11/12+11/12.23+11/23.24+...+11/89.100) + x = 2/3
B1:tim cac so nguyenx,y biet:
X,y + 2.x- 3y= 11
B2 tim x biet
A -15.(x+2)+7.(2x-3)=(-5) . (+10)
Giai gap minh nhe
tim x biet
a)2^x+2 -2^x=96
b)x-(50x/100+25x/200)=111/4
c) (x-5).30/100=200x/100+5
tim x biet:4/11<x/20<5/11
Tim x€z biet .
/2/x-(-11)=21
Tim x biet
(7x -11 )^3 = 2^5 x 2^2 +200
tim x biet
11: 2 x + 3 (11chia het)