One mark exercise problems I — task. Mathematics State Board, Class 7.

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1. The generalization of the number pattern \(3\), \(6\), \(9\), \(12\), ... is .

2. The solution of \(3x + 5 = x + 9\) is .

3. The equation \(y + 1 = 0\) is true only when \(y\) is .

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1. One mark exercise problems I