Respuesta :

tapasiya

Answer:

59

Step-by-step explanation:

all triangles add up to 180 degrees.

add 87+34=121

do 180-121=59 because you want to find the value of x

to check your work add up all of the degrees together and when you get 180 you will be correct!

Answer:

x=59

Step-by-step explanation:

87+x+34=180 because its a straight line

121+x=180

x=59