Question

Как решить уравнение 48y-25y-20=417

Answer 1

23y-20-417=0
23y-437=0
23y=437
y=19

Answer 2

48у-25у=417+20
23у=437
у=437/23
у=19
48*19-25*19-20=417
912-475-20=417
417=417