6x+0.4y=4.2

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Solution for 6x+0.4y=4.2 equation: 


Simplifying
6x + 0.4y = 4.2

Solving
6x + 0.4y = 4.2

Solving for variable 'x'.

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

Add '-0.4y' to each side of the equation.
6x + 0.4y + -0.4y = 4.2 + -0.4y

Combine like terms: 0.4y + -0.4y = 0.0
6x + 0.0 = 4.2 + -0.4y
6x = 4.2 + -0.4y

Divide each side by '6'.
x = 0.7 + -0.06666666667y

Simplifying
x = 0.7 + -0.06666666667y

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