Finding an unknown variable in Algebra

Question

When you are trying to find an unknown value, the goal is to isolate the unknown letter to one side of the equals marks.

Answer 1

x+y = 2

x = 2-y

x^2 + y^2 = 25

x^2 = 25-y^2

x = +/-sqr(25-y^2)

sqrx = y +2

x = (y+2)^2 = y^2 +4y +4

1/x = y

x = 1/y

y^2 =x^3

x = cube root of y^2 = y^(2/3)

among other endless equations where you isolate x on one side