contestada

"A student showed work to solve the equation 6(3+1) - 40 = 9-8 for .

Step one: 6(3+1) - 40 = 9-8
Step two: 18+6 - 40 = 9-8
Step three: 18+6 - 46 = 9-8
Step four: 9-46 = 8
Step five: 9 = 54
= 6

The student made a mistake in step two. Choose the correct equation for step two:
A) 16 = 17
B) 24 - 40 = 9-8
C) 18 - 34 = 9-8
D) 18 - 46 = 9-8"