Answer:
121
Step-by-step explanation:
First we find angles of triangle:
First angle is: 180-115=65
Secend angle is:360-304=56
Sum of all angles in triangle is 180. So the 3th angle of triangle is:
180-(65+56)=180-121=59
Sum of x and 3th angle is 180, then
X=180-59=121
<ABC +<ABE = 180°(straight angle)
<ABC = 180-115° = 65°
<A = 360°-304° = 56° ( complete angle)
external angle of a triangle is equal to the sum of two opposite interior angles.
therefore, x = 56°+65°= 121°
