Step-by-step explanation:
[tex]x + \frac{4}{9} = \frac{3}{4} [/tex]
Subtract with 4/9 on both sides and we get:
[tex]x = \frac{3}{4} - \frac{4}{9} [/tex]
To get the same value we multiply 3/4 with 9, and 4/9 with 4. Then we have:
[tex]x = \frac{27}{36} - \frac{16}{36} [/tex]
And at last we get that x = 11/36