Hva er 3 7/10 + 10 4/15?

Trinn 1: Konverter til feilfraksjoner

#3(10)# #+# #7# #=# #37#

#15(10)# #+# #4#=154

#154/15#

Trinn 2: Finn LCD-skjermen

#10#: #2(5)#

#15#: #3(5)#

#2(3)(5)##=# 30

Trinn 3: #37##(3)##/##30# #+# #154(2)##/# 30= 419/30