Question

3*x-7800=1200 Помогите решить

Answer 1

3х-7800=1200

3х=1200+7800

3х=9000

х=3000

Answer 2

3*x-7800=1200

3*x=7800+1200

3*x=9000

x=9000:3

x=3000

3*3000-7800=1200

              1200=1200