9x-4y=-20

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Solution for 9x-4y=-20 equation: 


Simplifying
9x + -4y = -20

Solving
9x + -4y = -20

Solving for variable 'x'.

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

Add '4y' to each side of the equation.
9x + -4y + 4y = -20 + 4y

Combine like terms: -4y + 4y = 0
9x + 0 = -20 + 4y
9x = -20 + 4y

Divide each side by '9'.
x = -2.222222222 + 0.4444444444y

Simplifying
x = -2.222222222 + 0.4444444444y

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