qua vo van... can 7 diop chua @devil

a

=> \(2n-1\inƯ_{\left(7\right)}=\left\{-1;1;7;-7\right\}\)

Nếu 2n-1=1 =>n= \(\left(1+1\right):2=1\)

nếu \(2n-1=-1\Rightarrow n=\left(-1+1\right):2=0\)

nếu \(2n-1=7\Rightarrow n=\left(7+1\right):2=4\)

nếu \(2n-1=-7\Rightarrow n=\left(-7+1\right):2=-3\)

7kg=0,7 kg

a=1

b=9

c=8

can you tell my the house you , ok!!!

15 la dung dua nao cai tao va tao an 14 sai duoc 90 tren violympic

\(5,6.4+5,6.3+5,6.2+5,6\)

\(=5,6.4+5,6.3+5,6.2+5,6.1\)

\(=5,6.\left(4+3+2+1\right)\)

\(=5,6.10\)

\(=56\)