Question

Answer 1

\(\text{x}-\dfrac{5}{1\text{2}}+\dfrac{7}{1\text{2}}=\dfrac{1}{\text{2}}:\dfrac{3}{4}.\left(\dfrac{-9}{16}\right).\)

\(\Leftrightarrow\text{x}-\dfrac{1}{6}=\dfrac{-3}{8}.\)

\(\Leftrightarrow\text{x}=\dfrac{-5}{\text{2}4}.\)

Answer 2

Câu 4: 

\(\Leftrightarrow\dfrac{x}{8}=\dfrac{-7}{y}=\dfrac{z}{-18}=\dfrac{16}{t}=-\dfrac{1}{2}\)

=>x=-4; y=14; z=9; t=-32