Answer:

The Answer is 15 179/310

Step-by-step explanation:

n - ( 8 4/5 ÷ 2 5/8 ) = 12 1/2

n - ( 44/5 x 8/21 ) = 12 1/2

n - (352/105 ) = 12 1/2

n - 3 37/105 = 12 1/2

n = 12 1/2 + 3 37/105 find the LCD 310 is the LCD

n = 12 105/310 + 3 74/310

n = 15 179/310