5. If a, B, C, D are all integers, and the equation (a-2b) x = 1, (b-3c) y = 1, (c-4d) z = 1, W + 100 = D has positive integer solutions x, y, Z, w respectively, then the minimum value of a is___

2433 substitute d to the front and C to the front to get a = 24W + 2400 + 6Z + 2Y + X
And because we take the minimum value of a and x.y.z.w are all positive integer solutions, we all take 1

RELATED INFORMATIONS

1. Suppose that a, B, C and D are four constants. Here are four equations: (a-2b) x = 1, (b-3c) y = 1, (c-4d) z = 1, W + 100 = D, What are the minimum values of X, y, Z and W respectively
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