Question

помогите решить уравнение    54х=(72+х)*60

Answer 1

54х=(72+х)*60
54х=4320+60х
54х-60х=4320
-6х=4320
х=-720

Answer 2

54х=(72+х)*60
54х=4320+60х
54х-60х=4320
-6х=4320
х=4320:(-6)
х=-720
54*(-720)=72+(-720)*60