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29-10-2020
Mathematics

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Respuesta :

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29-10-2020

Answer:

Raul's mistake was in step 2

Step-by-step explanation:

Step 1 ;

[tex]3+5-7[/tex]

Step 2 :

[tex]3+2[/tex]

This was where Raul made a mistake

5-7 = -2 not +2

So the correct workings are ;

[tex]3+5-7\\\\3-2\\\\=1[/tex]

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