Question 44586
check it
{{{2/15 = (2/15)*(7/7)}}}
{{{2/15 = 14/105}}}
{{{8/21 = (8/21)*(5/5)}}}
{{{8/21 = 40/105}}}
{{{14/105 + 40/105 = 54/105}}}
you got 8/21 = 13/105 wrong