Question

(3728-у):54=69 ; (148+z)*3=1584 ; 992:(130-х)=62 ; (715-х)*83=8383

Answer 1

3728-у):54=69
3728-у=69*54
3728-у=3726
у=3728-3726
у=2
(3728-2):54=69
69=69


(148+z)*3=1584
148+z=1584:3
148+z=528
z=528-148
z=380