Answer:
4e +5+21=90
4e+26=90
4e=64
e= 16
Explanation:
This is a 90 degree angle (right angle), soo you the measures given would be equal to 90 degrees
1.first simplify the equation
2. subtract 26 from both sides
3. Now divide 4 from boht sides to leave the unknown variable alone
4. You are left with the answer, which is 16
I hope this helps!