Mathematics, 17.04.2021 14:00, hazelg

Find the number of solutions of the equation x + y + z + w = 18, where the variables are non-negative
integers satisfying x ≥ 1, z ≥ 3.

Answers: 3

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Find the number of solutions of the equation x + y + z + w = 18, where the variables are non-negati...