Các câu hỏi tương tự
S = 1 x 2 x 3 x 4 + 2 x 3 x 4 x5 + ... + 2015 x 2016 x 2017 x 2018
\(\frac{x-1}{2018}+\frac{x-2}{2017}-\frac{x-3}{2016}=\frac{x-4}{2015}\)
Tìm x
\(\frac{x+4}{2015}+\frac{x+3}{2016}=\frac{x+2}{2017}+\frac{x+1}{2018}\text{ }\text{ }\)
2/5×(x-1)+1=3/5
(2/7×x+1)×(3-1/2×x)=0
5/4×x+1=1/2x+3/4
X-2020/10^2+x-202^0/10^3+x-2020/10^4=0
0x+1/2018+x+2/2017=x+3/2016-x+4/2015
2015
Nhanh tk nha
Tìm x
a, x+1/2 + x+2/3 + x+3/4 + x+4/5 + ....+ x+5/6=5
b, x+1/2017 + x+2/2016 + x+3/2015 = x+4/2014 + x+5/2013 + x+6/2012
Tìm x biết
a)x/2+x/3+x/4+x/5=0
b)x+1/2019 + x+2/2018 = x+3/2017 + x+4/2016
tim x
x + 4 / 2018 + x+ 5 / 2017 + x + 6 / 2016 + x+ 7 / 2015 = - 4
a, x+1/2013+x+1/2014+x+1/2015=x+1/2016+x+1/2017
b,x-1/2013+x-2/2014+x-3/2015=x-4/2016-2
tìm x
x-2015/2+x-2016/3=x-2017/4+x-2017/5