Please help, I really struggle with this! anythibg will help

[tex]{:\implies \quad \sf \dfrac{3}{8}+\dfrac{3}{6}}[/tex]
After taking LCM ;
[tex]{:\implies \quad \sf \dfrac{9+12}{24}}[/tex]
[tex]{:\implies \quad \sf \dfrac{21}{24}}[/tex]
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{7}{8}}}}[/tex]
[tex]{:\implies \quad \sf \dfrac{5}{9}+\dfrac{1}{3}}[/tex]
After taking LCM ;
[tex]{:\implies \quad \sf \dfrac{5+3}{9}}[/tex]
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{8}{9}}}}[/tex]
[tex]{:\implies \quad \sf \dfrac{5}{12}+\dfrac{7}{8}}[/tex]
After taking LCM ;
[tex]{:\implies \quad \sf \dfrac{10+21}{24}}[/tex]
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{31}{24}}}}[/tex]
[tex]{:\implies \quad \sf \dfrac{7}{9}-\dfrac{1}{6}}[/tex]
After taking LCM ;
[tex]{:\implies \quad \sf \dfrac{14-3}{18}}[/tex]
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{11}{18}}}}[/tex]
[tex]{:\implies \quad \sf 4\dfrac{2}{5}+2\dfrac{1}{5}}[/tex]
Simplifying it into improper fraction will leave with us ;
[tex]{:\implies \quad \sf \dfrac{22}{5}+\dfrac{11}{5}}[/tex]
Now , we know that whenever we add or subtract two or much fractions and their denominator is same , then the resultant has the same denominator and we had to perform operations in just numerator .
Applying it here ;
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{33}{5}}}}[/tex]
[tex]{:\implies \quad \sf 5\dfrac{3}{8}+2\dfrac{7}{8}}[/tex]
Simplifying it into improper fraction will leave with us ;
[tex]{:\implies \quad \sf \dfrac{43}{8}+\dfrac{23}{8}}[/tex]
[tex]{:\implies \quad \sf \dfrac{43+23}{8}}[/tex]
[tex]{:\implies \quad \sf \dfrac{66}{8}}[/tex]
[tex]{:\implies \quad \bf \underline{\underline{\dfrac{33}{4}}}}[/tex]
Note :- Whenever we have a mixed fraction of the form [tex]{\bf a\dfrac{b}{c}}[/tex] we convert it into an improper fraction of the form [tex]{\bf \dfrac{ac+b}{c}}[/tex]