4.2=-9+x

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Solution for 4.2=-9+x equation:


Simplifying
4.2 = -9 + x

Solving
4.2 = -9 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
4.2 + -1x = -9 + x + -1x

Combine like terms: x + -1x = 0
4.2 + -1x = -9 + 0
4.2 + -1x = -9

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -1x = -9 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -1x = -9 + -4.2
-1x = -9 + -4.2

Combine like terms: -9 + -4.2 = -13.2
-1x = -13.2

Divide each side by '-1'.
x = 13.2

Simplifying
x = 13.2

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