Respuesta :

Step-by-step explanation:

here is the answer of each question respectively

Ver imagen jojenifer
(-5) + (-4) = -9

(-3) + (+1) = -2

(-2) . (-7) = 14

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

(-4) . (-7) = 28

(-18) + (-6) = -24

(+8) .(+3) = 24

(-4) - (-1) = -3

(+6) - (-2) = 8

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

(+9) + (-3) = 6

(+6) + (-5) = 1
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