Question

\(\dfrac{1}{2}+\dfrac{1}{4}\) \(=\) 

 

\(\dfrac{12}{13}-\dfrac{21}{26}=\) 

 

\(1\dfrac{3}{4}-\dfrac{7}{19}=\) 

 

\(1\dfrac{5}{6}-\dfrac{9}{13}=\)

 

 

Answer 1

\(\dfrac{1}{2}+\dfrac{1}{4}=\dfrac{4}{8}+\dfrac{2}{8}=\dfrac{6}{8}=\dfrac{3}{4}\)

\(\dfrac{12}{13}-\dfrac{21}{26}=\dfrac{24}{26}-\dfrac{21}{26}=\dfrac{3}{26}\)

\(1\dfrac{3}{4}-\dfrac{7}{19}=\dfrac{7}{4}-\dfrac{7}{19}=\dfrac{133}{76}-\dfrac{28}{76}=\dfrac{105}{76}\)

\(1\dfrac{5}{6}-\dfrac{9}{13}=\dfrac{11}{6}-\dfrac{9}{13}=\dfrac{143}{78}-\dfrac{54}{78}=\dfrac{89}{78}\)

Answer 2

=\(\dfrac{3}{4}\)

\(\dfrac{1}{26}\)

 

Answer 3

1)

=\(\dfrac{2}{4}\)+\(\dfrac{1}{4}\)

=\(\dfrac{3}{4}\)

2)

=\(\dfrac{24}{26}\)-\(\dfrac{21}{26}\)

=\(\dfrac{3}{26}\)

3)

=\(\dfrac{7}{4}\)-\(\dfrac{7}{19}\)

=\(\dfrac{133}{76}\)-\(\dfrac{28}{76}\)

=\(\dfrac{105}{76}\)

4)

=\(\dfrac{11}{6}\)-\(\dfrac{9}{13}\)

=\(\dfrac{143}{78}\)-\(\dfrac{54}{78}\)

=\(\dfrac{89}{78}\)

Answer 4

\(\dfrac{1}{2}+\dfrac{1}{4}=\dfrac{2}{4}+\dfrac{1}{4}=\dfrac{2+1}{4}=\dfrac{3}{4}\)

\(\dfrac{12}{13}-\dfrac{21}{26}=\dfrac{24}{26}-\dfrac{21}{26}=\dfrac{24-21}{26}=\dfrac{3}{26}\)

\(1\dfrac{3}{4}-\dfrac{7}{19}=\dfrac{7}{4}-\dfrac{7}{19}=\dfrac{133}{76}-\dfrac{28}{76}=\dfrac{133-28}{76}=\dfrac{105}{76}\)

\(1\dfrac{5}{6}-\dfrac{9}{13}=\dfrac{11}{6}-\dfrac{9}{13}=\dfrac{143}{78}-\dfrac{54}{78}=\dfrac{143-54}{78}=\dfrac{89}{78}\)