Can you solve this example? (Challenge 7)

#Tricks #Math
If you can solve this example before you watch the solution, connect with us you may get an award, and if you have another method to solve it, certainly we want to know it.

Mathematics,Learning,Tricks,Math,MathisFun,MathVideo,Arithmetic,practice,solve,example,solution,mentalmath,can yo solve,can you find,2000+ skills.,mental math,Khan Academy,Speed Math,Arithmetic calculations,equations,numbers,tecmath,mathtutordvd,indySOW,Mathtricks,mathchallenge,math hoffa,mathias,math rock,mathantics,math songs,math for kids,mathil,math videos,math tricks,math problems,math tricks for kids,math tricks easy,math tricks algebra,math tricks app,