7x-9=7x-x

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


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

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

Combine like terms: 7x + -1x = 6x
-9 + 7x = 6x

Solving
-9 + 7x = 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
-9 + 7x + -6x = 6x + -6x

Combine like terms: 7x + -6x = 1x
-9 + 1x = 6x + -6x

Combine like terms: 6x + -6x = 0
-9 + 1x = 0

Add '9' to each side of the equation.
-9 + 9 + 1x = 0 + 9

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

Combine like terms: 0 + 9 = 9
1x = 9

Divide each side by '1'.
x = 9

Simplifying
x = 9

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