4(0.4)+(-2)(1-0.4)=x

Solution for 4(0.4)+(-2)(1-0.4)=x equation:

Simplifying
4(0.4) + (-2)(1 + -0.4) = x

Multiply 4 * 0.4
1.6 + (-2)(1 + -0.4) = x

Combine like terms: 1 + -0.4 = 0.6
1.6 + -2(0.6) = x

Multiply -2 * 0.6
1.6 + -1.2 = x

Combine like terms: 1.6 + -1.2 = 0.4
0.4 = x

Solving
0.4 = 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.
0.4 + -1x = x + -1x

Combine like terms: x + -1x = 0
0.4 + -1x = 0

Add '-0.4' to each side of the equation.
0.4 + -0.4 + -1x = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -1x = 0 + -0.4
-1x = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
-1x = -0.4

Divide each side by '-1'.
x = 0.4

Simplifying
x = 0.4