Answer:
x=2
Step-by-step explanation:
As it is isosceles triangle
[tex]{:}\rightarrowtail\sf 3x+5=5x+1 [/tex]
[tex]{:}\rightarrowtail\sf 5x+1=3x+5 [/tex]
[tex]{:}\rightarrowtail\sf 5x-3x=5-1 [/tex]
[tex]{:}\rightarrowtail\sf 2x=4 [/tex]
[tex]{:}\rightarrowtail\sf x=\cancel{\dfrac {4}{2}}[/tex]
[tex]{:}\rightarrowtail\sf x=2 [/tex]
