-2.5x+3.9y=7

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Solution for -2.5x+3.9y=7 equation: 


Simplifying
-2.5x + 3.9y = 7

Solving
-2.5x + 3.9y = 7

Solving for variable 'x'.

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

Add '-3.9y' to each side of the equation.
-2.5x + 3.9y + -3.9y = 7 + -3.9y

Combine like terms: 3.9y + -3.9y = 0.0
-2.5x + 0.0 = 7 + -3.9y
-2.5x = 7 + -3.9y

Divide each side by '-2.5'.
x = -2.8 + 1.56y

Simplifying
x = -2.8 + 1.56y

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