Answer:
a = 9
Step-by-step explanation:
So in this case you just cross multiply
8 : 12 = 6 : a
6(12) = 8(a)
72 = 8a
Divide both sides by 8
9
[tex]\frac{8}{12}=\frac{6}{a}[/tex]
[tex]\frac{2}{3}=\frac{6}{a}[/tex]
[tex]2a=6\cdot{3}[/tex]
[tex]2a=18[/tex]
[tex]a=\frac{18}{2}[/tex]
[tex]a=9[/tex]
