Answer :

[tex]0.36p=3.86-0.26[/tex]
[tex]0.36p=3.6[/tex]
[tex]p= \frac{3.6}{0.36} [/tex]
[tex]p=10[/tex]

Hope I helped :)
[tex]0.36p+0.26=3.86\ \ \ \ |subtract\ 0.26\ from\ both\ sides\\\\0.36p=3.6\ \ \ \ |divide\ both\ sides\ by\ 0.36\\\\p=\frac{3.6}{0.36}\\\\p=\frac{3.6\cdot100}{0.36\cdot100}\\\\p=\frac{360}{36}\\\\\boxed{p=10}[/tex]