Question

2/21-(-1/28)=

Answer 1

\(\dfrac{2}{21}-\left(-\dfrac{1}{28}\right)=\dfrac{8}{84}-\dfrac{-3}{84}=\dfrac{8-\left(-3\right)}{84}=\dfrac{11}{84}\)

Answer 2

\(\dfrac{2}{21}-\left(-\dfrac{1}{28}\right)=\dfrac{2}{21}+\dfrac{1}{28}=\dfrac{8}{84}+\dfrac{3}{84}=\dfrac{11}{84}\)

Answer 3

11/84