Respuesta :

Mauritha

Answer:

65.3

Step-by-step explanation:

89.10 - [(1.20 × 31)+ (4.90 + 7)]

89.10 - [37.2 + 11.9]

89.10 - 23.8

= 65.3

40 because 1.2 x 31 = 37.20 and 4.9 + 7 = 11.90 so 89.10 - 49.10 = 40

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