tolong dijawab ya guys please... pake cara ya

bila roh setan ditanganku ku kan berjalan seperti jalan mernari

3=A.21/4+5/3-13/6=63/12+20/12-26/12=57/12=4 9/12=4 3/4
B.75/10-25/100+7/5=750/100-25/100+140/100=865/100=8,65