Respuesta :

[tex]sp+r=\frac{1}{2}[/tex]

Replace the given values:

[tex]\frac{1}{4}p-\frac{1}{6}=\frac{1}{2}[/tex]

Add 1/6 to both sides:

[tex]\frac{1}{4}p=\frac{2}{3}[/tex]

Multiply both sides by 4:

[tex]p=\frac{8}{3}[/tex]