.8+x=.42

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Solution for .8+x=.42 equation: 


Simplifying
0.8 + x = 0.42

Solving
0.8 + x = 0.42

Solving for variable 'x'.

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

Add '-0.8' to each side of the equation.
0.8 + -0.8 + x = 0.42 + -0.8

Combine like terms: 0.8 + -0.8 = 0.0
0.0 + x = 0.42 + -0.8
x = 0.42 + -0.8

Combine like terms: 0.42 + -0.8 = -0.38
x = -0.38

Simplifying
x = -0.38

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