xc is 90. That is, x=10 and c=100. Since x is smaller than c, we subtract rather than add the values. Thus 100-10=90. The inverse, cx, would be 110 (that is, 100+10).
The sum of the Roman numerals: V+XL+XLV = XC (90)
x = (d-a)/(a-c)
Cross Country... XC
factor b(x+2) + c(x+2) (b+c)(x+2) need more info for futher analysis.
It is: XC = 100-10 = 90
It is: CX = 110
Mazda CX-9
The Roman numeral XC represents the number 90
x = cx = aa+1 If x = cx, then c = 1 aa = a2 if a2 + 1 = x, then a2 = x-1 short of parametrization, this is the answer for this equation, but if you doing advanced maths, then let x= t (teR) a2 = -1 +t (teR)
XC is the usual convention (X =10 subtracted from C = 100). More rarely seen is LXXXX (L=50 and XXXX = 40)
It is: XC = 100-10 = 90