4x+9y=81

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Solution for 4x+9y=81 equation: 


Simplifying
4x + 9y = 81

Solving
4x + 9y = 81

Solving for variable 'x'.

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

Add '-9y' to each side of the equation.
4x + 9y + -9y = 81 + -9y

Combine like terms: 9y + -9y = 0
4x + 0 = 81 + -9y
4x = 81 + -9y

Divide each side by '4'.
x = 20.25 + -2.25y

Simplifying
x = 20.25 + -2.25y

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