.50*.30=x

Solution for .50*.30=x equation:

Simplifying
0.50 * 0.30 = x

Multiply 0.50 * 0.30
0.15 = x

Solving
0.15 = 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.
0.15 + -1x = x + -1x

Combine like terms: x + -1x = 0
0.15 + -1x = 0

Add '-0.15' to each side of the equation.
0.15 + -0.15 + -1x = 0 + -0.15

Combine like terms: 0.15 + -0.15 = 0.00
0.00 + -1x = 0 + -0.15
-1x = 0 + -0.15

Combine like terms: 0 + -0.15 = -0.15
-1x = -0.15

Divide each side by '-1'.
x = 0.15

Simplifying
x = 0.15