➷ You need to know these rules to do this:
Two different signs next to each other, make a negative sign
Two signs that are the same, make a plus
The answer = 7
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Answer: 7
Step-by-step explanation:
Remember PEMDAS. Parentheses, exponents, multiplication & division (left to right), addition & subtraction (left to right). Also remember to switch the sign when working with negative numbers [ex. 2 - (-2) switches to 2 + 2, 2 + (-2) switches to 2 - 2), etc]
So:
9 + (-4) - (-2) - (7 × 0)
9 - 4 + 2 - 0
5 + 2
7
