Respuesta :

choixongdong

Answer:

12

Step-by-step explanation:

Order of operations

3{25–[7^2–4(11–4)]}

= 3{25–[49–4(7)]}

= 3{25–[49–28]}

= 3{25–21}

= 3{4}

= 12

Bizzy6

Answer:

12

Step-by-step explanation:

given the expression 3 (25 - (7² - 4 (11 - 4)))

we need to work from the innermost bracket out

3 (25 - (7² - 4 (7)))     multiply 4 and 7

3 (25 - (7² - 28))        find 7²

3 (25 - (49 - 28))       solve 49 - 28

3 (25 - 21)                 solve 25 - 21

3 (4)

12


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