(5)/(1)-(21)/(8) - subtract fractions

Solution for the given fractions

• 5/1 - 21/8 = ?
• The common denominator of the two fractions is: 8
• 5/1 = (5*8)/(1*8) = 40/8
• 21/8 = (1*21)/(1*8) = 21/8
• Fractions adjusted to a common denominator
• 5/1 - 21/8 = 40/8 - 21/8
• 40/8 - 21/8 = (40-21)/8
• (40-21)/8 = 19/8

Solution for the given fractions

$ \frac{5}{1 }-\frac{ 21}{8 }=? $

The common denominator of the two fractions is: 8

$ \frac{5}{1 }= \frac{(5*8)}{(1*8)} =\frac{ 40}{8} $

$ \frac{21}{8 }= \frac{(1*21)}{(1*8)} =\frac{ 21}{8} $

Fractions adjusted to a common denominator

$ \frac{5}{1 }-\frac{ 21}{8 }=\frac{ 40}{8 }-\frac{ 21}{8} $

$ \frac{40}{8 }-\frac{ 21}{8 }= \frac{(40-21)}{8} $

$ \frac{(40-21)}{8 }=\frac{ 19}{8} $

$ $

see mathematical notation