I continue to struggle with these integrals...

It has given me quite a headache...

Here are the two problems I'm stuck in:

$\displaystyle

\int_1^{-1}\frac{3}{7-5x}dx

$

$\displaystyle

\int_0^\frac{2\pi}{3} tan(\frac{x}{2})dx

$

What confuses me the most are the numbers on the Integral sign...

Please assist me.