(b+5/6)-3/4, b=5/12 (1/5+d)-9/20, d=13/16

Question

(b+5/6)-3/4, b=5/12
(1/5+d)-9/20, d=13/16

Answer 1

(b+5/6)-3/4, b+1/12=5/12+1/12=1/2(1/5+d)-9/20, d-1/4=13/16-1/4=9/16