What is the value of X if X=a+b+c+d+3 and x/5=a, x/8=b, x/6=c, x/2=d
If
a+b=8, a+c=13, b+d=8, c-d=6
Then
a, b, c, d = ??
I am thinking of two regular polygons. One polygon has m sides and D(m) diagonals, and the other has n sides and D(n) diagonals.
If D(m) + D(n) = 125, what is the value of m + n?