Can someone please help me with this question asap!?

[tex] \qquad \qquad \bf \huge\star \: \: \large{ \underline{Answer} } \huge \: \: \star[/tex]
[tex]\textsf{ \underline{\underline{Steps to solve the problem} }:}[/tex]
Take HJ = a, GH = b and GJ = c
put the value of a from equation 1 in equation 2
now, put the value of a and c in equation 3
Now, we need to find HJ (a)
[tex]{ \qquad \large \sf {Conclusion} :} [/tex]