Problem Solving

[Problem Solving] 试题详情

2x + y = 12
│y│≤ 12
For how many ordered pairs (x, y) that 2 solutions of the system above are x and y both integers?

Options:

7
10
12
13
14

Correct:

D

Problem Solving

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[点此查看答疑][GWD]Problem Solving

为什么是13?思路怎样的
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[点此查看答疑][GWD]Problem Solving

为什么是13?思路怎样的

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