Question

Use cross products to solve the proportion.
14/21=a/9

Answer 1

`\sf\boxed{a=6}}}`

Explanation:

Isolate the term of a from one side of the equation.

14/21=a/9

Use cross products.

`\sf{14*9=21*a}`

Solve by a.

`A=(14*9)/(21)=(126)/(21)=\boxed{\sf{6}}`

a=6

So, the final answer is a=6.

I hope this helps! Let me know if my answer is wrong or not.