2-x-7y=9

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


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

Solving
2 + -1x + -7y = 9

Solving for variable 'x'.

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

Add '-2' to each side of the equation.
2 + -1x + -2 + -7y = 9 + -2

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

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

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

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

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

Divide each side by '-1'.
x = -7 + -7y

Simplifying
x = -7 + -7y

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