In the triangle shown, for \(\angle A\) to be the largest angle of the triangle, it must be that . What is the least possible value of \(n-m\), expressed as a common fraction?
x+9>3x
9>2x
x<4.5
x+9>x+4 always true
3x+x+4>x+9
3x>5
x>1.6
so
1.6
m=1.6
n=4.5
You can finish it.
. What is the least possible value of \(n-m\), expressed as a common fraction? 
