Các câu hỏi tương tự
tim x biet 1 / 3 x 4 + 1 / 4 x 5 + 1 / 5 x 6 + 1 / 6 x 7 = 1 / x
tim so tu nhien x biet : 1/4<2/x<1/3
Tim x biet : ( x + 1 ) + ( x + 2 ) ( x + 3 ) + ( x +4 ) + ( x + 5 ) = 4 + 5 + 6 + 7 + 8
Tbc cua x 113 y115 la 207 Tim x y biet x = 1/3 y
tim x biet
1+2+3+4+...+n=465
tim x biet
1/3x4+1/4x5+1/5x6+1/6x7=1/x
tim so y va x biet: (x+1)*(y-1)=2
Tim gia tri cua x biet 1/4 nhan 1/5 nhan x=1/2
1.Tim x la phan so biet
a,7 x X = 4
b,X x 2 =1
c,1 chia X = 3
d,4 chia X =9
mong mng giup do