Answer:
Ah yes, one of my favorite topics.
Step 1: Which ever fraction comes first, you will solve it first. For this question, focus on doing
first. Afterwards, do 
Step 2: First one equals to 1.125. Next, find the LCD (lowest common dominator, which is 10). 
Step 3: 1.125+3/10
(4x2-2x3)
(8-6)
xz=2
Hope this helps!
X = age of Mikhail
x+x-12 = 36
2x= 36 + 12
2x = 48
x = 48/2
x= 24
To find the area you would had to do a an triangle formula so the final answer would be 63 inches