Respuesta :

Answer:

-2.9

Step-by-step explanation:

You are really subtracting. Note that if you have a positive & negative sign directly next to each other, you will subtract:

-1.2 + (-1.7) = -1.2 - 1.7 = -2.9

-2.9 is your answer.

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The answer is -2.9
2+7= 9
1+1=2
Keep the sign and decimal where it is