[tex]\huge{\boxed {\tt {Solution :-}}}[/tex]
Now we solving it :
[tex]\sf{ : \implies{5x - 7 = 3x + 8}} \\ \\ \sf{ : \implies{5x - 3x= 8 + 7}} \\ \\ \sf{ : \implies{2x= 15}} \\ \\ : \implies{ \boxed{ \tt{x= \dfrac{15}{2}}}}[/tex]
[tex]\bf{\therefore{The\: value\: of\:x\:is\:\dfrac{15}{2} .}}[/tex]
[tex]\rule {307}{2}[/tex]