5 per + 9 per 14= 2.7 per 5 + 5 per 8=?? jawab ya besok di kumpulin pliss jawan

5/14+9/14=14/14
7/5+5/8=56/40+25/40=81/40
14/14+81/40=280/280+567/280
=847/280
=3. 7/280
=3. 1/40