Question 860882
Find a common denominator for 2,3, and 4. Use 12.
{{{6 + 1/2=72/12+6/12=78/12}}}
{{{1 + 3/4=12/12+9/1221/12}}}
{{{2 + 2/3=24/12+8/12=32/12}}}
So then,
{{{78/12-21/12-32/12=(78-21-32)/12}}}
{{{78/12-21/12-32/12=25/12}}}
{{{78/12-21/12-32/12=2 +1/12}}}