Question

1.Marind un numar rational cu 2 supra 3 obtinem 5 supra 2. Determinati numarul.

2. Daca la dublul unui numar adaugam 1 pe 5, obtinem -4 supra 3. Determinati nr.

Answer 1

x+2/3=5/2
aducem la acelasi numitor
6x+4=15
x=11/6
b) 2x+ 1/5= -4/3
aducem la acelasi numitor
30x+3=-20
30x=-23
x=-23/30

Answer 2

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