4*0.1=X*0.9

Solution for 4*0.1=X*0.9 equation:

Simplifying
4 * 0.1 = X * 0.9

Multiply 4 * 0.1
0.4 = X * 0.9

Reorder the terms for easier multiplication:
0.4 = 0.9X

Solving
0.4 = 0.9X

Solving for variable 'X'.

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

Add '-0.9X' to each side of the equation.
0.4 + -0.9X = 0.9X + -0.9X

Combine like terms: 0.9X + -0.9X = 0.0
0.4 + -0.9X = 0.0

Add '-0.4' to each side of the equation.
0.4 + -0.4 + -0.9X = 0.0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + -0.9X = 0.0 + -0.4
-0.9X = 0.0 + -0.4

Combine like terms: 0.0 + -0.4 = -0.4
-0.9X = -0.4

Divide each side by '-0.9'.
X = 0.4444444444

Simplifying
X = 0.4444444444