12(x-2)-7x(x-1)=5x+2c+6
2 Ответ (-а, -ов)
12(x-2)-7x(x-1)=5x+2c+6
12x-24-7x^2+7x-5x-2c=6
-7x^2+14x-2c=30
12x-24-7x^2+7x-5x-2c=6
-7x^2+14x-2c=30
12x-24-7x+7=5x+2c+6
12x-7x-5x=24+6+2c
x=30+2c
12x-7x-5x=24+6+2c
x=30+2c