Respuesta :

breenabell44
distribute 3x through all the numbers in () then solve for x and you get 21x-4

CrazyEmily
Hello there!

To simplify this expression, you must follow PEMDAS.

3x(3+12÷3) parentheses first
3x(3+4) do the division
3x(7) addition inside of parentheses
21x multiplication

This means that Jay is incorrect in doing addition first.

I really hope this helps!
Best wishes :)

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