3x+9y=4x+7y

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Solution for 3x+9y=4x+7y equation:


Simplifying
3x + 9y = 4x + 7y

Solving
3x + 9y = 4x + 7y

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
3x + -4x + 9y = 4x + -4x + 7y

Combine like terms: 3x + -4x = -1x
-1x + 9y = 4x + -4x + 7y

Combine like terms: 4x + -4x = 0
-1x + 9y = 0 + 7y
-1x + 9y = 7y

Add '-9y' to each side of the equation.
-1x + 9y + -9y = 7y + -9y

Combine like terms: 9y + -9y = 0
-1x + 0 = 7y + -9y
-1x = 7y + -9y

Combine like terms: 7y + -9y = -2y
-1x = -2y

Divide each side by '-1'.
x = 2y

Simplifying
x = 2y

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