You can
put this solution on YOUR website!the sum would be...-18
a negative plus a negative will give you a negative...
so you just add the numbers together and it leaves you with 18 and all you need to do is put the negative sign..
dont get confused though
remember that a negative plus a negative is a negative
a negative plus a positive you subtract and take the sign of the bigger number..
a positive plus a positive is a positive
if you learn the signs it is really easy
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