Question

Mọi người giúp mk nha mai nộp r 

Answer 1

Ảnh hơi mờ! 

1/ \(\dfrac{x}{12}-\dfrac{5}{6}=\dfrac{1}{12}\)

=> \(\dfrac{x}{12}=\dfrac{1}{12}+\dfrac{10}{12}\)

=> \(\dfrac{x}{12}=\dfrac{11}{12}\)

=> x = 11

2/ \(\dfrac{2}{3}-1\dfrac{4}{15}x=-\dfrac{3}{5}\)

\(\Leftrightarrow\dfrac{19}{15}x=\dfrac{10}{15}+\dfrac{9}{15}\)

\(\Leftrightarrow x=1\)

3/ => \(\dfrac{2}{6}+\dfrac{2}{3}x=\dfrac{5}{6}\)

=> \(\dfrac{2}{3}x=\dfrac{3}{6}\)

=> 12x = 9

=> x = 3/4

5/ => \(\dfrac{\left(-3\right)^x}{3^4}=-3^3\)

=> x = 12

6/=> \(\left[{}\begin{matrix}x-1=5\\x-1=-5\end{matrix}\right.\) => \(\left[{}\begin{matrix}x=6\\x=-4\end{matrix}\right.\)