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Why do you have to flip the sign of an inequality when multiplying by a negative number?
In this video you will learn how to solve and graph inequalities. When solving inequalities you will use the same inverse operations as solving equations. The difference will be when you multiply or ...
Teach multiplying and dividing with negative numbers through a complete, classroom-ready Year 7 Core PowerPoint lesson. This carefully sequenced resource develops more than a memorised sign rule.
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