Is the result of the sum a rational or an irrational number?

$\frac{3}{10}+\frac{7}{8}$310+78

Rational

Irrational

$-\frac{2}{7}+\frac{1}{11}$−27+111

$\frac{3}{11}+\sqrt{7}$311+√7

$\frac{4}{7}$47 $+$+ $\left(-\frac{9}{11}\right)$(−911)