Đáp án:

\(a\in(5;3;6;2;11;-3;18;-10)\)

Tra lời nhanh giúp mik nha

\(\frac{2}{5}-\frac{3}{x}=\frac{1}{35}\)

\(\frac{3}{x}=\frac{2}{5}-\frac{1}{35}\)

\(\frac{3}{x}=\frac{14}{35}-\frac{1}{35}\)

\(\frac{3}{x}=\frac{13}{35}\)

\(\Leftrightarrow13x=3\times35\)

\(13x=105\)

\(x=\frac{105}{13}\)

\(\frac{1}{8}-\frac{7}{5}-\frac{2}{x}=\frac{-233}{120}\)

\(\frac{7}{40}-\frac{8}{40}-\frac{2}{x}=\frac{-233}{120}\)

\(\frac{-1}{40}-\frac{2}{x}=\frac{-233}{120}\)

\(\frac{2}{x}=\frac{-1}{40}-\left(\frac{-233}{120}\right)\)

\(\frac{2}{x}=\frac{-3}{120}+\frac{233}{120}\)

\(\frac{2}{x}=\frac{23}{12}\)

\(\Leftrightarrow23x=2\times12\)

\(23x=24\)

\(x=\frac{24}{23}\)

x=24/23 nha

Ta có: 7b+2⋮b−2

⇔7b−14+16⋮b−2

mà 7b−14⋮b−2

nên 16⋮b−2

⇔b−2∈Ư(16)

⇔b−2∈{1;−1;2;−2;4;−4;8;−8;16;−16}

hay b∈{3;1;4;0;6;−2;10;−6;18;−14}

Vậy: b∈{3;1;4;0;6;−2;10;−6;18;−14}

Tl nhanh mik cho

hdhiq

nam or nữ vậy

\(9\cdot\left(-2\right)^3+9\cdot\left(-3\right)^0=9\cdot\left(-8\right)+9\cdot1\)

\(=-72+9=-63\)

k cho mik

=-63 mũ

tk nha

đúng thì vote nghe bro

=4 nhe :))))))))))))))))

|13 - x| - 19 = -17

=> |13 - x| = -17 + 19

=> |13 - x| = 2

=> \(\orbr{\begin{cases}13-x=2\\13-x=-2\end{cases}}\)

=> \(\orbr{\begin{cases}x=11\\x=13-\left(-2\right)=13+2=15\end{cases}}\)

Vậy : ...

17 đung

Phần bể chưa có nước bằng:

    1 - \(\dfrac{1}{4}\) = \(\dfrac{3}{4}\) (thể tích bể)

Bể sẽ đầy sau:

   \(\dfrac{3}{4}\) : \(\dfrac{1}{8}\) = 6 (giờ)

Đs...