437-(x-83)=20 Уравнение

Question

437-(x-83)=20
Уравнение

Answer 1

437-(x-83)=20
х-83=437-20
х-83=417
х=417+83
х=500
437-(500-83)=20
437-417=20
          20=20

Answer 2

437-(x-83)=20
х-83=437-20
х-83=417
х=417+83
х=500