-6(7+9x)=9x+9 помогите
-6(7+9х)=9х+9 -42-54х=9х+9 -54х-9х=9+42 -63х=51 х=51/(-63) Ответ:51/(-63)
-42-54x=9x+9, -54x-9x=9+42, -63x=51, x=-51/63.