(2)/(7)+(8)/(21) - adding of fractions

Solution for the given fractions

• 2/7 + 8/21 = ?
• The common denominator of the two fractions is: 21
• 2/7 = (2*3)/(3*7) = 6/21
• 8/21 = (1*8)/(1*21) = 8/21
• Fractions adjusted to a common denominator
• 2/7 + 8/21 = 6/21 + 8/21
• 6/21 + 8/21 = (6+8)/21
• (6+8)/21 = 14/21
• 14/21 = 2/3

Solution for the given fractions

$ \frac{2}{7 }+\frac{ 8}{21 }=? $

The common denominator of the two fractions is: 21

$ \frac{2}{7 }= \frac{(2*3)}{(3*7)} =\frac{ 6}{21} $

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

Fractions adjusted to a common denominator

$ \frac{2}{7 }+\frac{ 8}{21 }=\frac{ 6}{21 }+\frac{ 8}{21} $

$ \frac{6}{21 }+\frac{ 8}{21 }= \frac{(6+8)}{21} $

$ \frac{(6+8)}{21 }=\frac{ 14}{21} $

$ \frac{14}{21 }=\frac{ 2}{3} $

$ $

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