a+b=195/8
a=b+23/6
b+23/6+b=195/8
2b=195/8-23/6=(195·3-23·4)/24=(585-92)/24=493/24
b=493/24·2=493/48
a=b+23/6
a=493/48+23/6=(493+184)/48=677/48
a+b=147/4
a-b=149/6
2a=147/4+149/6=(441+298)/12=729/12
a=739/2·12=739/24
b=147/4-739/24=(882-739)/24=143/24
