.30x+.90(400)=.60(400+x)

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Solution for .30x+.90(400)=.60(400+x) equation:


Simplifying
0.30x + 0.90(400) = 0.60(400 + x)

Multiply 0.90 * 400
0.30x + 360 = 0.60(400 + x)

Reorder the terms:
360 + 0.30x = 0.60(400 + x)
360 + 0.30x = (400 * 0.60 + x * 0.60)
360 + 0.30x = (240 + 0.60x)

Solving
360 + 0.30x = 240 + 0.60x

Solving for variable 'x'.

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

Add '-0.60x' to each side of the equation.
360 + 0.30x + -0.60x = 240 + 0.60x + -0.60x

Combine like terms: 0.30x + -0.60x = -0.3x
360 + -0.3x = 240 + 0.60x + -0.60x

Combine like terms: 0.60x + -0.60x = 0.00
360 + -0.3x = 240 + 0.00
360 + -0.3x = 240

Add '-360' to each side of the equation.
360 + -360 + -0.3x = 240 + -360

Combine like terms: 360 + -360 = 0
0 + -0.3x = 240 + -360
-0.3x = 240 + -360

Combine like terms: 240 + -360 = -120
-0.3x = -120

Divide each side by '-0.3'.
x = 400

Simplifying
x = 400

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