Question

Ajutati-ma - 2×-1=3 =) 2×=-2 =) ×=1 ,2-1=1 =) 2× = 0 =) ×=0. =) 2×=2 =) ×=1 ;2x -1 = 1 =) 2×=2 =) ×=1 ;2×-1 = 3 =) 2× = 4 =) ×=2 varoggg

Answer 1

- 2×-1=3 =) 2×=-2 =) ×=1 ,2-1=1 =) 2× = 0 =) ×=0. =) 2×=2 =) ×=1  Este gresit
Corect este: -2x=4 ⇒ x= -2
Verificare: -2 *( -2)  - 1= 4-1=3 OK
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2x -1 = 1 =) 2×=2 =) ×=1 ;2×-1 = 3 =) 2× = 4 =) ×=2  Este gresit si aici.
Corect este: 2x=1+1=2 ⇒ x=1
Verificare: 2*1 -1 = 2-1 = 1 OK
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Succes in continuare!