Respuesta :

iciclepiano18

Answer:

Look at bolded numbers

Step-by-step explanation:

1. 3-(-5)=3+5=8

2. -7-8=-7+(-8)=-15

3. -55-(-55)=-55+55=0

4. 10-15=10+(-15)=-5

5. 0-(-18)=0+18=18

++ makes a positive

+- makes a negative

-+ makes a negative

-- makes a positive

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