where do you put the brackets for 69-4+9+15

No brakets are neccesary. 69-4+9+15..

Go on by one........

69-4+9+15.........69-4=65

65+9+15............65+9=74

74+15=89.

 there you go!

Signed,

Mathwizard91472

where do you put the brackets for 69-4+9+15

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No brackets are necessary!!!........we perform addition and subtraction as we encounter them from left to right..............

Hang on a moment, I don't think that the question was finished. Surely there was supposed to be an equal sign and another number at the end?????

Still, what you have both said is right of course.

Hi Mathwizzard91472  it is great to see you answering this question.  It was a really good answer too.