tim x biet 1- (5/3/8 + x - 7/5/24 ) / 16/2/3 =0
tim x,y biet
/ x+2/ +/y-1/=0
tim x,biet: 1+2+3+5+...+x=55
1 Tim x biet:
a, 2+4+6+.....+ x =240
b,1+2+3+......+x=306
1. tim x biet:
a, 1+2+3+4+......+ x=1999
b, 1+4+7+.......+ x=103
tim x biet :x:2+x*3/4+x*1/2+x*1/4=8 .Bạn nào trả lời được mình đánh 10 tích
tim x biet : ( x + 1/2 ) + ( x + 1/4 ) + ( x + 1/8 ) + ( x + 1/16 ) = 1
tim x biet 7+x/12=2/3 b)25-x/18=1/2
Giup minh voi tim x biet
5/3 - 1/3 : ( 1 - x . 1/3 ) = 7/6
3 - ( x : 1/2 +3/2 ) - 1/4 = 1/2