Question

4-x/x+5=(-2/3)^2
mn giúp tôi câu này vs

Answer 1

\(\frac{4-x}{x+5}=\left(-\frac{2}{3}\right)^2\)

=> \(\frac{4-x}{x+5}=\frac{4}{9}\)

=> 9.(4-x)=4.(x+5)

=> 36-9x=4x+20

=> -9x-4x=20-36

=> -13x=-16

=> x=\(\frac{-16}{-13}=\frac{16}{13}\)