(14 + 1/16) - 0,0025 × 25 = a
84 + 1/6 - 0,0625 = a
85/6 - 625/10000 = a
85/6 - 1/16 = a
680-3/48 = a
677/48 = a
a = 677/48
(4 + 1/4) : 0,85 + 1 : 0,5 = b
16 + 1/4 : 0,85 + 2 = b
17/4 : 0,85 + 2 = b
4,25 : 0,85 + 2 = b
5 + 2 = b
7 = b
b = 7
(4 + 1/8) - 0,004 × 300 = c
32 + 1/8 - 1,2 = c
33/8 - 1,2 = c
4,125 - 1,2 = c
2,925 = c
c = 2,925
