Răspuns:
[tex] \frac{3}{x} + 4 = \frac{6}{18} [/tex]
[tex] \frac{3}{x} = \frac{6}{18} - 4[/tex]
[tex] \frac{3}{x} = \frac{6 - 18 \times 4}{18} [/tex]
[tex] \frac{3}{x} = \frac{6 - 72}{18} [/tex]
[tex] \frac{3}{x} = \frac{ - 66}{18} [/tex]
-66x=3×18
-66x=54
[tex]x = \frac{ 54}{ - 66} [/tex]
[tex]x = \frac{27}{ - 33} [/tex]
[tex]x = \frac{9}{ - 11} [/tex]
