Delvin Goh's answer to Summer Graham's Primary 1 Maths question.
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To solve this kind of question, obtain the 2 equations, then find a way to cancel out one of the terms completely.
In this case, multiplying the 2nd equation by 2 will give you 10W, which is the same as equation 1's 10W.
In this case, multiplying the 2nd equation by 2 will give you 10W, which is the same as equation 1's 10W.
Date Posted:
6 years ago
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