poate rezolva cineva repede va rog? e urgent!

Răspuns:
f)
[tex] \frac{x}{1} \div \frac{3}{4} = \frac{3}{1} [/tex]
[tex] \frac{x}{1} \times \frac{4}{3} = \frac{3}{1} [/tex]
[tex] \frac{4x}{3} = \frac{3}{1} [/tex]
3×3=4x×1
9=4x
[tex]x = \frac{9}{4} [/tex]