Respuesta :

clarch19

Answer:

20

Step-by-step explanation:

substitute first to get:

6 + (3·4 - 5)2

multiply 3 and 4 to get 12:

6 + (12 - 5)2

subtract 12 and 5 to get 7:

6 + 7(2)

multiply 7 and 2 to get 14

6 + 14 = 20

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