Question

Помогите найти p
3,5−6+(−0,39p)=−20+3,5−4,39p

Answer 1

$3,5-5+(-0,39p)=-20+3,5-4,39p\\-6-0,39p=-20-4,39p\\-0,39p+4,39p=-20+6\\4p=-14\\p=-\frac{7}{2}=-3\frac{1}{2}=-3,5$