Question

Help ...

Answer 1

@Hero help ?

Answer 2

cross multiplication first

Answer 3

\[\frac{9}{16}=\frac{x}{192}\]
Now, if\[a=b\], then \[ka=kb\]
Let's make a=9/16, and b=x/192, and multiply by 192 (which is k in this case):
\[\frac{9}{16}192=\frac{x}{192}192=x\]
The 192s cancel (as m/m=1 for any m (here it is 192))
so now just divide 192 by 16 and multiply the answer by 9 to get what x is.