[tex]a) \frac{44}{11} = \frac{8}{x} [/tex]
[tex]x = \frac{8 \times 11}{44} = \frac{8}{4} = 2[/tex]
[tex]b) \frac{2x + 1}{2} = \frac{x + 4}{3} [/tex]
[tex]2(x + 4) = 3(2x + 1)[/tex]
[tex]2x + 8 = 6x + 3[/tex]
[tex]2x - 6x = 3 - 8[/tex]
[tex] - 4x = - 5 \: | \times ( - 1)[/tex]
[tex]4x = 5[/tex]
[tex]x = \frac{5}{4} [/tex]
