300=x-(x*0.25)

Solution for 300=x-(x*0.25) equation:

Simplifying
300 = x + -1(x * 0.25)

Reorder the terms for easier multiplication:
300 = x + -1(0.25x)

Remove parenthesis around (0.25x)
300 = x + -1 * 0.25x

Multiply -1 * 0.25
300 = x + -0.25x

Combine like terms: x + -0.25x = 0.75x
300 = 0.75x

Solving
300 = 0.75x

Solving for variable 'x'.

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

Add '-0.75x' to each side of the equation.
300 + -0.75x = 0.75x + -0.75x

Combine like terms: 0.75x + -0.75x = 0.00
300 + -0.75x = 0.00

Add '-300' to each side of the equation.
300 + -300 + -0.75x = 0.00 + -300

Combine like terms: 300 + -300 = 0
0 + -0.75x = 0.00 + -300
-0.75x = 0.00 + -300

Combine like terms: 0.00 + -300 = -300
-0.75x = -300

Divide each side by '-0.75'.
x = 400

Simplifying
x = 400