A = 3.6·( 3/4 + 2/9 + 5'12 )
B = (84.8·0.125)÷(10.07÷0.95)
C = (1 5 12 − 2 3 )÷0.15+ (14−0.14)÷0.014/99
D = 0.28·4,500÷35· 1/12

what does each letter equal

can you make a proportion from theese numbers