Bạn tham khảo nhé!

\(Q=\left(-3\right)+\left(-4\right)+\left(-5\right)+...+\left(-40\right)\\ \Rightarrow Q=-\left(3+4+5+...+40\right)\\ \Rightarrow Q=-817\)

Bạn tham khảo nhé!

\(\overline{a4b}⋮2;5\Rightarrow b=0\\ Do\overline{a4b}⋮9\Rightarrow a+4+0⋮9\Rightarrow a+4⋮9\Rightarrow a=5\\ \Rightarrow\overline{a4b}=540\)

\(ƯC\left(24;36\right)=\left\{\pm12;\pm6;\pm4;\pm3;\pm2;\pm1\right\}\)

\(=24-\left[124-\left(-158\right)\right]+\left(200-420\right)\\=24-282-220\\ =-478\)

Bạn xem thử cách này nhé!

\(6⋮x+2\\ \Rightarrow x+2\inƯ\left(6\right)=\left\{\pm6;\pm3;\pm1\right\}\\ \Rightarrow x=\left\{4;-8;1;-5;-1;-3\right\}\)

D

B