4.2+4=3x+9.4

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Solution for 4.2+4=3x+9.4 equation:


Simplifying
4.2 + 4 = 3x + 9.4

Combine like terms: 4.2 + 4 = 8.2
8.2 = 3x + 9.4

Reorder the terms:
8.2 = 9.4 + 3x

Solving
8.2 = 9.4 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
8.2 + -3x = 9.4 + 3x + -3x

Combine like terms: 3x + -3x = 0
8.2 + -3x = 9.4 + 0
8.2 + -3x = 9.4

Add '-8.2' to each side of the equation.
8.2 + -8.2 + -3x = 9.4 + -8.2

Combine like terms: 8.2 + -8.2 = 0.0
0.0 + -3x = 9.4 + -8.2
-3x = 9.4 + -8.2

Combine like terms: 9.4 + -8.2 = 1.2
-3x = 1.2

Divide each side by '-3'.
x = -0.4

Simplifying
x = -0.4

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