.4(.75)=x

Solution for .4(.75)=x equation:

Simplifying
0.4(0.75) = x

Multiply 0.4 * 0.75
0.3 = x

Solving
0.3 = 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.
0.3 + -1x = x + -1x

Combine like terms: x + -1x = 0
0.3 + -1x = 0

Add '-0.3' to each side of the equation.
0.3 + -0.3 + -1x = 0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + -1x = 0 + -0.3
-1x = 0 + -0.3

Combine like terms: 0 + -0.3 = -0.3
-1x = -0.3

Divide each side by '-1'.
x = 0.3

Simplifying
x = 0.3