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Arithmetic then geometric progression integers

High school · ●●●○○ 50 pts

Three distinct integers aa, bb, cc satisfy the following conditions: - abc=17955abc = 17955; - aa, bb, cc are three consecutive terms of an arithmetic sequence, in that order; - 3a+b3a+b, 3b+c3b+c, 3c+a3c+a are three consecutive terms of a geometric sequence, in that order. Find a+b+ca+b+c.

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geometric sequencessystems of equationscubic equations