Respuesta :

helloejik

Answer:

x=21 degrees

Step-by-step explanation:

<J congruent <E        (Base Angles Theorem)

90+(7x+3)+(7x+3)=180      (Sum of Angles in a Triangle)

96+14x=180                        (Algebra and Substitution)

180-96=`4x

84=4x

x=84:4

x=21


Hope this helps! <3