reduce the fraction -20t^5u^2v^3/48t^7u4v
lets reduce the fraction step by step if needed:-20t^5u^2v^3/48t^7u^4v= -5 v^2/12 t^2u^2that is, the exponents were:t = 5 - 7 = -2 that is belowu = 2 - 4 = -2 that is belowv = 3 - 1 = 2 that is upper