Question

x +2 chia hết cho 10,15,25 và x<500

Answer 1

gấp gấp ạ

 

Answer 2

\(x+2\in BC\left(10,15,25\right)=B\left(150\right)=\left\{0;150;300;450\right\}\left(x< 500\Rightarrow x+2< 502\right)\\ \Rightarrow x\in\left\{-2;148;298;448\right\}\)