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aflati x daca
15x-½=3

Răspuns :

AnneSt
30 x / 2 - 1 / 2 = 3
30 x - 1 = 2 × 3
30 x = 7
x = 7 / 30
[tex]15x - \frac{1}{2} = 3[/tex]

[tex]15x = 3 + \frac{1}{2} [/tex]

[tex]15x = \frac{6}{2} + \frac{1}{2} [/tex]

[tex]15x = \frac{6 + 1}{2} [/tex]

[tex]15x = \frac{7}{2} [/tex]

[tex]15x \times 2 = 7[/tex]

[tex]30x = 7[/tex]

[tex]x = \frac{7}{30} [/tex]

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