$1$ For L$1$ and L$2$ regular language pairs; L$1$ L$2$ defined by F$.$A$.$ and R$.$E$.$ find it$.$ Show step by step.

$L1=(b+ab{)}^{*}(a+),L2=(a+ba{)}^{*}a$

$2$ For L$1$ and L$2$ regular language pairs; L$1$ L$2$ defined by F$.$A$.$ and R$.$E$.$ find it$.$ Show step by step.

$L1=(ab{)}^{*},L2=b(a+b{)}^{*}$