Respuesta :

Answer:

10

Step-by-step explanation:

If you use "p.e.m/d.a/s." you do parenthesis first if we subsutute "n" as 10, 10-9=1 then you eqation is 2(1)-1=1

2x1 is 2 now your eqation is 2-1=1

obviously 2-1 =1

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