Question

Find another name for the given number but with the denominator indicated. Use multiplication by 1.

8/9=?/45

Answer 1

\[\frac{8}{9} = \frac{x}{45}\]

Cross multiply:
\[(9)x = 8(45)\]
Divide both sides by 9:
\[x = \frac{8(45)}{9}\]\[x = 8(5)\]\[x = 40\]