Brüche/Addition und Subtraktion/Aufgabe/Lösung

1. ${}{\frac {11}{10}}=1{\frac {1}{10}}$
2. ${}{\frac {5}{12}}$
3. ${}1{\frac {3}{4}}$
4. ${}-{\frac {1}{8}}$
5. ${}{\frac {ad+cb}{bd}}$
6. ${}{\frac {ab+c}{b^{2}}}$
7. ${}{\frac {3ac+2bd}{12bc^{2}}}$
8. ${}{\frac {a(b-c)+d(b+c)}{b^{2}-c^{2}}}$
9. ${}{\frac {a(1-x)(1+x)+b(1+x)^{2}+c(1-x)}{(1-x^{2})(1+x)}}$
10. ${}{\frac {a^{2}-b^{2}+c^{2}-d^{2}}{ac+bc+ad+bd}}$