Respuesta :

MatrixEva

Answer:

D. -12.9

Step-by-step explanation:

when you let x=7.1

-7.1+(-5.8) Adding a negative is the same as subtracting.

-7.1-5.8= -12.9

Use the substitution method

-x+(-5.8)

-7.1+(-5.8)

positive sign (+) and negative sign (-) = negative sign (-)

-7.1-5.8

-12.9

Answer: -12.9 last choice

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