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Adimotto
a fost răspuns

rezolvati 7x+1=22

rezolvati in multimeanr nat inecuati 2×(x+13)⊂145-103
3×(y+21)⊂64

Răspuns :

7x=22-1 /x=21:7/x=3
2x+26<42/2x<42-26/2x<16/x<16:2/x<8. x=0,1,2,3,4,5,6,7
3y+63<64/3y<64-63/3y<1/y<1/3

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