.4x+280=6(x+400)

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Solution for .4x+280=6(x+400) equation:


Simplifying
0.4x + 280 = 6(x + 400)

Reorder the terms:
280 + 0.4x = 6(x + 400)

Reorder the terms:
280 + 0.4x = 6(400 + x)
280 + 0.4x = (400 * 6 + x * 6)
280 + 0.4x = (2400 + 6x)

Solving
280 + 0.4x = 2400 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
280 + 0.4x + -6x = 2400 + 6x + -6x

Combine like terms: 0.4x + -6x = -5.6x
280 + -5.6x = 2400 + 6x + -6x

Combine like terms: 6x + -6x = 0
280 + -5.6x = 2400 + 0
280 + -5.6x = 2400

Add '-280' to each side of the equation.
280 + -280 + -5.6x = 2400 + -280

Combine like terms: 280 + -280 = 0
0 + -5.6x = 2400 + -280
-5.6x = 2400 + -280

Combine like terms: 2400 + -280 = 2120
-5.6x = 2120

Divide each side by '-5.6'.
x = -378.5714286

Simplifying
x = -378.5714286

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