(15-4 1/8)·( 3 14/15 - 2 3/5) = 14,5
1)15-4 1/8 = 14 8/8 - 4 1/8 = 10 7/8
2) 3 14/15 - 2 3/5 = 3 14/15 - 2 9/15 = 1 5/15 = 1 1/3
3) 10 7/8 · 1 1/3 = 87/8 · 4/3 = 87·4 / 8·3 = 29/2 = 14, 1/2 = 14,5
