3x+0.4=4.0

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Solution for 3x+0.4=4.0 equation: 


Simplifying
3x + 0.4 = 4.0

Reorder the terms:
0.4 + 3x = 4.0

Solving
0.4 + 3x = 4.0

Solving for variable 'x'.

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + 3x = 4.0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 3x = 4.0 + -0.4
3x = 4.0 + -0.4

Combine like terms: 4.0 + -0.4 = 3.6
3x = 3.6

Divide each side by '3'.
x = 1.2

Simplifying
x = 1.2

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