12.3=0.4-x

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Solution for 12.3=0.4-x equation:


Simplifying
12.3 = 0.4 + -1x

Solving
12.3 = 0.4 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
12.3 + x = 0.4 + -1x + x

Combine like terms: -1x + x = 0
12.3 + x = 0.4 + 0
12.3 + x = 0.4

Add '-12.3' to each side of the equation.
12.3 + -12.3 + x = 0.4 + -12.3

Combine like terms: 12.3 + -12.3 = 0.0
0.0 + x = 0.4 + -12.3
x = 0.4 + -12.3

Combine like terms: 0.4 + -12.3 = -11.9
x = -11.9

Simplifying
x = -11.9

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