3.5x+4.2y=35.7

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Solution for 3.5x+4.2y=35.7 equation: 


Simplifying
3.5x + 4.2y = 35.7

Solving
3.5x + 4.2y = 35.7

Solving for variable 'x'.

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

Add '-4.2y' to each side of the equation.
3.5x + 4.2y + -4.2y = 35.7 + -4.2y

Combine like terms: 4.2y + -4.2y = 0.0
3.5x + 0.0 = 35.7 + -4.2y
3.5x = 35.7 + -4.2y

Divide each side by '3.5'.
x = 10.2 + -1.2y

Simplifying
x = 10.2 + -1.2y

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