Question

How do you solve `5/a=30/54`?

Answer 1

`a=9`

Explanation:

`5/a=30/54` => simplify: `30/54=5/9` then:
`5/a=5/9`=>equal fractions with equal numerators, then the denominators must be equal so:
`a=9`=> let's prove it:
`5/a=5/9`=>simplify further divide both sides by 5:
`1/a=1/9`=>cross multiply:
`1*a=1*9`=>or:
`a=9`