Answer:
The quotient is -3
Step-by-step explanation:
we have
[tex]\frac{a-3}{7}:\frac{3-a}{21}[/tex]
Multiply in cross
[tex]\frac{(a-3)21}{(3-a)7}[/tex]
Simplify
Remember that
[tex]\frac{21}{7}=3[/tex]
substitute
[tex]\frac{(a-3)3}{(3-a)}[/tex]
we know that
[tex](3-a)=-(a-3)[/tex]
substitute
[tex]\frac{(a-3)3}{-(a-3)}=-3[/tex]
