2x+4.2=9

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Solution for 2x+4.2=9 equation: 


Simplifying
2x + 4.2 = 9

Reorder the terms:
4.2 + 2x = 9

Solving
4.2 + 2x = 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 + 2x = 9 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 2x = 9 + -4.2
2x = 9 + -4.2

Combine like terms: 9 + -4.2 = 4.8
2x = 4.8

Divide each side by '2'.
x = 2.4

Simplifying
x = 2.4

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