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2. Find the number of integer solutions to x1 + x2 + x3 + x4 +...

2. Find the number of integer solutions to x1 + x2 + x3 + x4 + x5 = 50, x1 ≥ −3, x2 ≥ 0, x3 ≥ 4, x4 ≥ 2, x5 ≥ 12.

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