Find common denominators.
4 1/2 = 4 3/6
3 5/6
Turn both into improper fractions.
4 3/6 = 27/6
3 5/6 = 23/6
Subtract.
27/6 - 23/6 = 4/6
Simplify
4/6 = 2/3
Best of Luck!
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