We have that:
• Brianna used 5/8 of a cup of flour.
,
• Brianna used (also) 1/2 of a cup of sugar.
In this case, we are comparing the same measure: cups.
Therefore, we can subtract 1/2 from 5/8 to obtain the result. Then, we have:
[tex]\frac{5}{8}-\frac{1}{2}[/tex]
To have two fractions with the same denominator so we can subtract only the numerators, we can multiply both, the numerator and the denominator of the second fraction (1/2) by 4/4 as follows:
[tex]\frac{4}{4}=1\Rightarrow\frac{5}{8}-\frac{1}{2}\cdot\frac{4}{4}=\frac{5}{8}-\frac{4}{8}=\frac{5-4}{8}=\frac{1}{8}[/tex]
Therefore, Brianna used 1/8 cup more flour than sugar.
In summary, we can answer it as 1/8 cup.
