9(143-13x)=234 помогите плиз!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
234:9=26 143-26=117 117:13= 9 x=9
а вот ещё поможете
17(5x-16)=238
238:17=14 14+16=30 30:5=6 х=6
cgfcb,j
спасибо огромное. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!..........!!!!!!!☺☺☺☺⛲⛲⛲⛲⚓
9(143-13x)=234 143-13x=234:9 143-13x=26 143-26=13x 117=13x 117:13=x 9=x ----------- Ответ:9