70 POINTS!!! Marta tried solve the system below, but she made a mistake. Read carefully and try to figure out what her mistake was.

Finding Mistakes in a Solution
What was Marta’s mistake? Explain.
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70 POINTS Marta tried solve the system below but she made a mistake Read carefully and try to figure out what her mistake was Finding Mistakes in a Solution Wha class=

Respuesta :

Answer:

she forgot the first part

Also: sorry if its wrong I'm not the best at math

Answer:

The answer is 0

Step-by-step explanation: