(6 3/4 : 4 1/2 + 2 5/7 ) : 8 3/7- 2 /5

Question

(6 3/4 : 4 1/2 + 2 5/7 ) : 8 3/7- 2 /5

Answer 1

(27/4 : 9/2 + 19/7) : 59/7 - 2/5 = (27/4 * 2/9 + 19/7) * 7/59 - 2/5 = (3/2 + 19/7) * 7/59 - 2/5 = ((3*7 + 2*19)/(2*7)) * 7/59 - 2/5 = 59/14 * 7/59 - 2/5 = 1/2 - 2/5 = 1/10

Answer 2

(27/4 : 9/2 + 19/7) : 59/7 - 2/5 = (27/4 * 2/9 + 19/7) * 7/59 - 2/5 = (3/2 + 19/7) * 7/59 - 2/5 = ((3*7 + 2*19)/(2*7)) * 7/59 - 2/5 = 59/14 * 7/59 - 2/5 = 1/2 - 2/5 = 1/10