6.4.5 - Quick Check: Subtracting Fractions with Unlike Denominators

Bill has start fraction 2 over 3 end fraction of his pizza left from lunch. If he eats start fraction 3 over 7 end fraction more of the pizza, how much pizza is left?
A. one-fourth
B. start fraction 1 over 3 end fraction
C. start fraction 1 over 21 end fraction
D. start fraction 5 over 21 end fraction

help im really bad with fractions

1 answer

B. start fraction 1 over 3 end fraction