Question

хелп плиз 1171 1) ❤️❤️❤️

Answer 1

(2/3)/(4/9х-4/9)+1/20=4/5
(40/3+4/9х-4/9)/(80/9х-80/9)=4/5
200/3+20/9х-20/9=320/9х-320/9
20/9х-320/9х=-580/9-320/9
-300/9х=-900/9
х=-900/9:(-300/9)
х=3