x - x = 0, but if you meant to ask what is x, the answer is 4
The Multiplicative Property of 1.
3x=11 x=3+2/3 x²+x=(3+2/3)²+(3+2/3)=17+1/9 so the answer is about 17.11
xx+3x+7=6x+18 xx+3x+7-(6x+18)=6x+18-(6x+18) xx-3x-11=0 Factors of -11: 1,-11 -1,11 Doesn't factor evenly, use quadratic
If you mean the roman numerals, then IX = 9 and XI = 11, and 11+9=20 which can be written as XX.
3x1=7 1+7=8 8x3=24
If 5x plus 3y equals 13, the x equals 2 and y equals 1. This is because 5x2=10 and 3x1=3, and 10+3=13.
x=3
3
x=5 so it's 55+55= 110
50,0001/100=500/xx=100*500x=50,000
she is 11 (:xx
3.597285024 is close but it is slightly above.