Question

Find the value of 6 + (-18) + (-13) + 9.


a,-14
b,-16
c,-46
d,-10

Answer 1

I would go in order
first
6 + -18
they are different signs. so first subtract the smaller from the bigger: 18-6=12
then assign the sign of the "bigger" number. 18 is really -18 so the answer is -12

now your problem is
-12 + -13 + 9

can you continue? what is -12 + -13 ?

Answer 2

first of all remove the brackets and then simply solve it...

Answer 3

If you need more help, this might be useful
http://www.khanacademy.org/math/arithmetic/negative-numbers/v/adding-subtracting-negative-numbers

Answer 4

ok thanks