<span>When the product of two numbers is one</span>
H=2f/m+1
subtract one from both sides
h-1=2f/m
multiply m to both sides
m*h-1=2f
divide 2 both sides
mh-1/2=F
<span>(the whole left side of the equation is divided by 2 i just cant do it on the computer)</span>
100 is the common denominator so
70/100 + 20/100 90/100 = 9/10
