Hey, could you help me?

Question

A gift shop had 500 coloring pencils. The shop sold 3 sets of 20 coloring pencils, 6 sets of 12 coloring pencils, and 10 sets of 18 coloring pencils. Write a numerical expression to show how many coloring pencils are left. Evaluate the numerical expression using order of operations. Show your work.

This is stressing me out.

THANX!!!

Answer 1

500 - (3 x 20 + 6 x12 + 10 x 18) =

500 - (60 + 6 x 10 + 6 x2 + 180)

500 - (60 + 60 +12 +180)

500 - (120 + 12 +180)

500 - (132 + 180)

500 - 312

= 188

Answer 2

500 - (3 x 20) - (6 x 12) - (10 x 18)

500-60-72-180=188

or another way to look at it:

(3 x 20) + (6 x 12) + (10 x 18)

60 + 72 + 180 = 312 pencils sold

500-312=188

Answer 3

Coloring Pencils left = 500 - [(3*20)+(6*12)+(10*18)]

Answer = 500 - 312 = 188 coloring pencils left