How do you evaluate #18- [ 12\div ( 15\div ( 8- 7- 4) ) + 6\}#?

1 Answer

Answer:

#14.4#

Explanation:

Remember: PEMDAS

Start with #(8-7-4) = -3#

The expression would look like: #18 - #[#12 divide (15 divide -3) + 6]#

2nd: #15# divided by #-3# is #15/-3=-5#

The expression would look like: #18 - #[#12 divide -5 + 6]#

3rd: #12# divided by #-5# is #12/-5=-2.4#

4th: #-2.4 + 6 = 3.6#

The expression would look like: #18 - 3.6#

5th: #18 - 3.6 = 14.4 #