Question

решите уравнение 1/x + 3/x-1 + 4=0

Answer 1

$1 \div x + 3 \div x - 1 + 4 = 0 \\ 4 \div x + 3 = 0 \\ 4 \div x = - 3 \\ x = - 1 \frac{1}{3}$