PLEASE HELP!!!

An airplane hit a maximum altitude of 35,000 feet. Due to turbulence it descended 4,200 feet before climbing 750 feet. What is the altitude of the plane at this point?

Respuesta :

31,550

35,000 - 4,200 + 750=31,550
35,000 + 750 = 35,750 - 4,200 = 31,550

I changed the orders but if you do it in order, you should still get the same answer.