Answer:
x=5
Step-by-step explanation:
if it is an isosceles triangle sides AB and AC are the same
that means <A and <C are the same
<A = <C
73 = 73
<A + <B + <C = 180 triangle
73 + 6x+4 + 73 = 180
combine like terms
150 +6x = 180
subtract 150 from each side
6x = 30
divide by 6 on each side
x = 5
