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Rezolvati inN* inecuatia (3x+ 5x ) :4< 10.

Răspuns :


8x:4<10

2x<10

x<5

x={1,2,3,4}

(3x+5x):4<10|x4
3x+5x<10x4
3x+5x<40
8x<40|:8
x<5 =>x∈{1;2;3;4}