.5*.5=x

Solution for .5*.5=x equation:

Simplifying
0.5 * 0.5 = x

Multiply 0.5 * 0.5
0.25 = x

Solving
0.25 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
0.25 + -1x = x + -1x

Combine like terms: x + -1x = 0
0.25 + -1x = 0

Add '-0.25' to each side of the equation.
0.25 + -0.25 + -1x = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + -1x = 0 + -0.25
-1x = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
-1x = -0.25

Divide each side by '-1'.
x = 0.25

Simplifying
x = 0.25