Các câu hỏi tương tự
giup minh tra loi cau nay nha
x/2+x/3+x/4-0.6=-1va1/2
tim x
5/6x−3/4=−1/4+2/3
−1va1/2−2/3x=5/6−(−2/5)
(4/5:x+1,5):2/3=−1,5
4/3x−2/3=1/4−x
giup minh nhe minh dang can gap
tính A= 22019 - 22018 - 22017 -...- 2 - 1
Giup mk nha!!!
tim x : (x+2)/2019 + (x+3)/2018 + (x+4)/2017 + (x+5)/1008 + (x+2076)/11 = 0
lam nhu the nao giup minh voi
bài 1:
a) 25 - 18 + ( -43 )
b) (-34) + 11 + |-34|+ (-11)+105
c) 64 + 125 x 147 -47 x 125
d ) 360 : 12 x 2 + [ (11 - 4)3 -343 ] x 20172018
giup mk nha mk tick cho
\(\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+...+\frac{2}{x\left(x+1\right)}=\frac{2017}{2019}\)
Giúp mk nha
Tìm x biết
a) \(\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{2019}\right).x=\frac{2018}{1}+\frac{2017}{2}+\frac{2016}{3}+...+\frac{2}{2017}+\frac{1}{2018}\)
b) \(\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+...+\frac{2}{x\left(x+1\right)}=\frac{2017}{2019}\)
Bài 1: thực hiện phép tính
a)1/1×2+1/2×3+1/3×4+...+1/2019×2020
b)1/1×3+1/3×5+1/5×7+...+1/2017×2019
c)3^0+3^1+3^2+...+3^100
d)1/2+1/2^2+1/2^3+...+1/2^2019
Bài2:tìm x
a)|x-2|+|x2 -4=0
b)x+1/2.x-25%.x=10
c)2+4+6+8+...+2x=210
d)1/5×8+1/8×11+1/11×14+...+1/x(x+3)=101/1504
Chú ý: dấu chấm ở câu b)bài 2 là dấu nhân
tim x thuoc Z
2/2.3 + 2/3.4 + 2/4.5 + ... + 2/x(x+1) = 2015/2017
giup voi nha
ai nhanh nhat mk tich cho
thank you hihi