How to add a negative and a positive number, (-12) + 7

The video tutorial explains how to approach subtraction problems by rewriting them as addition problems. It emphasizes understanding negative numbers through a relatable analogy of money, where negative numbers represent debt and positive numbers represent cash in hand. The tutorial provides a practical example using money to illustrate how subtracting a negative is akin to owing money, making it easier to grasp without a calculator.

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