Respuesta :

Answer:

Step-by-step explanation:

if you multiply a negative number with another negative number, it will be positive: ( - ) x ( - ) = ( + )

and if you multiply a negative number with a positive number, it will be negative: ( - ) x ( + ) = ( - )

so          -(-4) = 4                  and             +(-9) = -9

-5+9-4+4-9-12+7=-10

I hope this helps

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