Respuesta :

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-8 here a rhyme my teacher used to help us remember (to the tune of row your boat)
same signs add and keep, different signs subtract, take the sign of the bigger number then you’ll be exact!

Answer:

-8

Step-by-step explanation:

-18 + 10 can be re-written as 10 - 18 or 10 - 10 -8 which can be simplified to -8

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