You need two independent linear equations to solve for two unknown variables.
x+xy=8 xy=-x+8 y=-1+8/x
If you're solving for x, then x = 3/y.
X +13 equals 22, X equals nine
5
12 + 5 equals...
542 X 13 = 7046
5
x - 13 = 5 x = 18
xy = x ÷x y = 1
xy + y = z xy = z - y (xy)/y = (z - y)/y x = (z - y)/y
That is the commutative property of equality.
mid point of xy