Solve the following equation; 5! – 4! – 4! / 4 = ??

Question

Solve the following equation:

The variable x is a real number, and the exponentiation operator is the real exponentiation operator (no complex values).

Answer 1

5! – 4! – (4! / 4)
= 5! - 4! - 3!
= 3!×((5×4) - (4) - (1))
= 6×(20 - 5)
=90.

Answer 2

5!-4!-4!/4= 120-24-6= 90