X + 1 / 2 = 6 / 7 (solved by equation) 3 / 8-x = 7 / 20 (solved by equation)

x+1/2=6/7 x=6/7-1/2 x=12/14-7/14 x=5/14
3/8-x=7/20 x=3/8-7/20 x=15/40-14/40 x=1/40