4.2+x=0.9

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Solution for 4.2+x=0.9 equation: 


Simplifying
4.2 + x = 0.9

Solving
4.2 + x = 0.9

Solving for variable 'x'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + x = 0.9 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + x = 0.9 + -4.2
x = 0.9 + -4.2

Combine like terms: 0.9 + -4.2 = -3.3
x = -3.3

Simplifying
x = -3.3

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