blank + 1/2 = 1 2/3

im trying to figure out the blank

2 answers

blank + 3/6 = 1 4/6
x+1/2 = 1 2/3.
x+1/2 = 5/3
X = 5/3-1/2 = 10/6-3/6 = 7/6 = 1 1/6.