(1 4/7)
_____
-(15/21)
To solve;
we will cange the division to multiplication. By doing that 15/21 becomes 21/15
That is;
[tex]\frac{14}{7}\times-\frac{21}{15}[/tex]7 can divide 21 to give 3
Hence;
[tex]\frac{14}{1}\times-\frac{3}{15}[/tex]3 can also divide 15 to give 5
[tex]\frac{14}{1}\times-\frac{1}{5}[/tex]we will now multiply
[tex]=\frac{-14}{5}[/tex][tex]=-2\frac{4}{5}[/tex]