Question

Tìm X, y thuộc N để (2x+23)thuộc B(1-3x)

Answer 1

(−23×x−35)×(3−2−103)=25(−23×x−35)×(3−2−103)=25

⇔(−23×x−35)×−296=25⇔(−23×x−35)×−296=25

⇔−23×x−35=25÷−296⇔−23×x−35=25÷−296

⇔−23×x−35=−12145⇔−23×x−35=−12145 

⇔−23×x=−12145+35⇔−23×x=−12145+35

⇔−23×x=1529⇔−23×x=1529 

⇔x=1529÷−23⇔x=1529÷−23

⇔x=−4558⇔x=−4558 

Answer 2

                          cho mình nha