Respuesta :

Answer:

-10

Step-by-step explanation:

-3 + -7 = -10

On the number line, draw "bridges" from -3 to -10. Then when you reach -10 draw a shaded dot on it. You should have 7 bridges as that's how much you moved to the left (how much you subtracted).

-3+-7 = -10

When a question has ( +- ) together that means it's ( - ) and you should go to the left.

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