Các câu hỏi tương tự
Tim x ,biet :
(x-78):70=0
(x-2)x (2x-10)=0
2x(x-5)=0
2x(x-6) =0
(x-15)x15=0
tim x biet
a. (x-3)(x+5)=0
b./9-2x/+x+3=2x+15
c./x+1/+/x-1/=4
Tim x biet:
a)(2x . 6). (3x-18)=0
B)25+(15-x)=30
tim x biet -2x-40=(5-x)-(-15+60)
tim(x;y) biet -|2x+4| -|y+5| lon hon bang 0 .Tim cap (x;y)
tim x , y biet | 2x . 4 | - | y + 5 | > 0
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
lxl<6
5<x<11
tim x biet
5x+15=0
1-2x=37
x+35=-22-x
( 6x-4^2).7^8=2x7^9
Tim x biet : 67-(15-2x)3=23×5