Хелп плиз 1171 1) ❤️❤️❤️
Решите задачу:
(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