(7x-9)-(6x+9)=

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Solution for (7x-9)-(6x+9)= equation:


Simplifying
(7x + -9) + -1(6x + 9) = 0

Reorder the terms:
(-9 + 7x) + -1(6x + 9) = 0

Remove parenthesis around (-9 + 7x)
-9 + 7x + -1(6x + 9) = 0

Reorder the terms:
-9 + 7x + -1(9 + 6x) = 0
-9 + 7x + (9 * -1 + 6x * -1) = 0
-9 + 7x + (-9 + -6x) = 0

Reorder the terms:
-9 + -9 + 7x + -6x = 0

Combine like terms: -9 + -9 = -18
-18 + 7x + -6x = 0

Combine like terms: 7x + -6x = 1x
-18 + 1x = 0

Solving
-18 + 1x = 0

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + 1x = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 1x = 0 + 18
1x = 0 + 18

Combine like terms: 0 + 18 = 18
1x = 18

Divide each side by '1'.
x = 18

Simplifying
x = 18

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