Integers: all four operations

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Learn it + and −: think of a number line (subtracting is adding the opposite). × and ÷: same signs give a positive answer, different signs give a negative one. BEDMAS still applies.

Example: $-6 + (-4) \times (-3)$

Multiply first: $(-4) \times (-3) = 12$ (same signs → positive).
Then $-6 + 12 = 6$.
Answer: 6.

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