Question 858215
{{{(4/15)/(4/5)=(9/10)/x}}} Simplifying it means,
{{{4/15*5/4=9/10*1/x}}}
{{{20/60=9/10x}}}
{{{1/3=9/10x}}} Multiply both sides by 10x
{{{10x/3=9}}} Then multiply by 3
{{{10x=27}}}
{{{x=2.7}}}

Hope that helps!