Question

3/x+5=15% giúp mình;-;

Answer 1

\(\dfrac{3}{x}+5=15\%\)

\(3:x=\dfrac{3}{20}-5\)

\(3:x=-\dfrac{97}{20}\)

\(x=3:\left(-\dfrac{97}{20}\right)\)

\(x=-\dfrac{60}{97}\)

Answer 2

\(\dfrac{3}{x}+5=15\%\)

\(\dfrac{3}{x}+5=\dfrac{3}{20}\)

\(\Rightarrow\dfrac{3}{x}=\dfrac{3}{20}-5\)

\(\Rightarrow\dfrac{3}{x}=\dfrac{3}{20}-\dfrac{100}{20}\)

\(\Rightarrow\dfrac{3}{x}=-\dfrac{97}{20}\)

\(\Rightarrow x=\dfrac{-20.3}{97}\)

\(\Rightarrow x=-\dfrac{60}{97}\)