Question

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

Answer 1

`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`