1.2x+4.2=0.4x+2.12

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Solution for 1.2x+4.2=0.4x+2.12 equation: 


Simplifying
1.2x + 4.2 = 0.4x + 2.12

Reorder the terms:
4.2 + 1.2x = 0.4x + 2.12

Reorder the terms:
4.2 + 1.2x = 2.12 + 0.4x

Solving
4.2 + 1.2x = 2.12 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
4.2 + 1.2x + -0.4x = 2.12 + 0.4x + -0.4x

Combine like terms: 1.2x + -0.4x = 0.8x
4.2 + 0.8x = 2.12 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
4.2 + 0.8x = 2.12 + 0.0
4.2 + 0.8x = 2.12

Add '-4.2' to each side of the equation.
4.2 + -4.2 + 0.8x = 2.12 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 0.8x = 2.12 + -4.2
0.8x = 2.12 + -4.2

Combine like terms: 2.12 + -4.2 = -2.08
0.8x = -2.08

Divide each side by '0.8'.
x = -2.6

Simplifying
x = -2.6

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