Answer:
Step-by-step explanation:
First we would make sure we know the interior angles and since we know that the opposing angles equal each other we would just move them to the inside
so here would be your angle values
A= 13x+6
B=8+3x
C=70º
and since we know that all triangles are equal to 180º we just plug the numbers into this equation A+B+C=180
and solve
13x+6+8+3x+70=180
84+16x=180
-84 -84
16x=96
/16 /16
x=6
then we plug the x value into the equation for B
8+3(6)
8+18
26
so the answer is 26º
