please help I need this now I'm doing a test

Question 11
What is the value of the expression 99 7a when a = 3? А 36 57 c 78 ​

please help I need this now Im doing a test Question 11 What is the value of the expression 99 7a when a 3 А 36 57 c 78 class=
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Respuesta :

Answer:

A 36

Step-by-step explanation:

99-7×9

99-63

36

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