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Spin20029
a fost răspuns

determinati elementele multimii A={x natural / (2x - 1) | (3x + 2)}

Răspuns :

Andreutzakriss
2x-1|3x+2/•2
2x-1|2x-1/•3

2x-1|6x+4
2x-1|6x-3→2x-1|(6x+4-6x+3)
2x-1|7
2x-1€D7
2x-1€{1,7} /+1
2x€{2,8} /:2
x€{1,4}

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