Question

(х-5 1/2)+7 5/18=9 4/9

Answer 1

Решение во вложении

Answer 2

x-(11/2)+(131/18)=(85/9)
x=(85/9)+(11/2)-(131/18)
x=(170+99-131)/18
x=(269-131)/18
x=138/18
x=7(2/3).