4=0.3x-0.4x-4

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Solution for 4=0.3x-0.4x-4 equation:


Simplifying
4 = 0.3x + -0.4x + -4

Reorder the terms:
4 = -4 + 0.3x + -0.4x

Combine like terms: 0.3x + -0.4x = -0.1x
4 = -4 + -0.1x

Solving
4 = -4 + -0.1x

Solving for variable 'x'.

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

Add '0.1x' to each side of the equation.
4 + 0.1x = -4 + -0.1x + 0.1x

Combine like terms: -0.1x + 0.1x = 0.0
4 + 0.1x = -4 + 0.0
4 + 0.1x = -4

Add '-4' to each side of the equation.
4 + -4 + 0.1x = -4 + -4

Combine like terms: 4 + -4 = 0
0 + 0.1x = -4 + -4
0.1x = -4 + -4

Combine like terms: -4 + -4 = -8
0.1x = -8

Divide each side by '0.1'.
x = -80

Simplifying
x = -80

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