Eric Nicholas K's answer to Lil’ Zee :”)'s Secondary 1 Maths Singapore question.

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Eric Nicholas K
Eric Nicholas K's answer
2938 answers (Tutor Details)
Essentially an order of operations question.

Brackets come first, followed by multiplication/division, followed by addition/subtraction.

Also, a negative divided by or multiplied by another negative gets you a positive. A positive divided/multiplied by a negative or a negative divided/multiplied by a positive gets you a negative number (or a minus).