5³ - 5 x 3² equals?

First, we would simplify the numbers with exponents.

53-5 x 32(53=125, 52=9)

125-5 x 9

Next, we would multiply:

125-5 x 9 (5 x 9=45)

125-45

And then, subtract:

125-45 (125-45=80)

80

53-5 x 32=80