0.4x+4=3x-9

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Solution for 0.4x+4=3x-9 equation:


Simplifying
0.4x + 4 = 3x + -9

Reorder the terms:
4 + 0.4x = 3x + -9

Reorder the terms:
4 + 0.4x = -9 + 3x

Solving
4 + 0.4x = -9 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
4 + 0.4x + -3x = -9 + 3x + -3x

Combine like terms: 0.4x + -3x = -2.6x
4 + -2.6x = -9 + 3x + -3x

Combine like terms: 3x + -3x = 0
4 + -2.6x = -9 + 0
4 + -2.6x = -9

Add '-4' to each side of the equation.
4 + -4 + -2.6x = -9 + -4

Combine like terms: 4 + -4 = 0
0 + -2.6x = -9 + -4
-2.6x = -9 + -4

Combine like terms: -9 + -4 = -13
-2.6x = -13

Divide each side by '-2.6'.
x = 5

Simplifying
x = 5

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