7x-2x+y+9y-x=

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Solution for 7x-2x+y+9y-x= equation:


Simplifying
7x + -2x + y + 9y + -1x = 0

Reorder the terms:
7x + -2x + -1x + y + 9y = 0

Combine like terms: 7x + -2x = 5x
5x + -1x + y + 9y = 0

Combine like terms: 5x + -1x = 4x
4x + y + 9y = 0

Combine like terms: y + 9y = 10y
4x + 10y = 0

Solving
4x + 10y = 0

Solving for variable 'x'.

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

Add '-10y' to each side of the equation.
4x + 10y + -10y = 0 + -10y

Combine like terms: 10y + -10y = 0
4x + 0 = 0 + -10y
4x = 0 + -10y
Remove the zero:
4x = -10y

Divide each side by '4'.
x = -2.5y

Simplifying
x = -2.5y

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