Question

What is `4+(-5)+(-9)+10`?

Answer 1

`0`

Explanation:

When adding integers (the positive and negative whole numbers, once they have been written like this, we can then write them without the brackets.

`+ (-5) " makes " -5 and -(-5) " makes +5`

`4+(-5)+(-9)+10`

=`4-5-9+10`

You can now work from left to right, but because adding is commutative, it is probably easier to place all the positives first and the negatives at the end.

=`4+10 -5 -9) = (4+10) +(-5-9)`

= `14-14`

=`0`