x-(2x+100)*0.4=400

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Solution for x-(2x+100)*0.4=400 equation:


Simplifying
x + -1(2x + 100) * 0.4 = 400

Reorder the terms:
x + -1(100 + 2x) * 0.4 = 400

Reorder the terms for easier multiplication:
x + -1 * 0.4(100 + 2x) = 400

Multiply -1 * 0.4
x + -0.4(100 + 2x) = 400
x + (100 * -0.4 + 2x * -0.4) = 400
x + (-40 + -0.8x) = 400

Reorder the terms:
-40 + x + -0.8x = 400

Combine like terms: x + -0.8x = 0.2x
-40 + 0.2x = 400

Solving
-40 + 0.2x = 400

Solving for variable 'x'.

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

Add '40' to each side of the equation.
-40 + 40 + 0.2x = 400 + 40

Combine like terms: -40 + 40 = 0
0 + 0.2x = 400 + 40
0.2x = 400 + 40

Combine like terms: 400 + 40 = 440
0.2x = 440

Divide each side by '0.2'.
x = 2200

Simplifying
x = 2200

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