Answer:
IT IS 40
Explanation:
oh my gosh I spent forever on this
ok so we want both equations answers to match since the angles are congruent
So I started at three and of course that was wrong
the way I got 40 was by increasing "x"
and then looking at the difference at both equations answers
for example 36
36x3= 108 -10 =98 and 36 x 2 = 72 +30= 102
so 102-98=4 so I knew I was getting close because we want the difference to be zero
so yeah I made my way up to forty and got it
hope that helps!