(9x-8)-(2x+13)=0

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Solution for (9x-8)-(2x+13)=0 equation:


Simplifying
(9x + -8) + -1(2x + 13) = 0

Reorder the terms:
(-8 + 9x) + -1(2x + 13) = 0

Remove parenthesis around (-8 + 9x)
-8 + 9x + -1(2x + 13) = 0

Reorder the terms:
-8 + 9x + -1(13 + 2x) = 0
-8 + 9x + (13 * -1 + 2x * -1) = 0
-8 + 9x + (-13 + -2x) = 0

Reorder the terms:
-8 + -13 + 9x + -2x = 0

Combine like terms: -8 + -13 = -21
-21 + 9x + -2x = 0

Combine like terms: 9x + -2x = 7x
-21 + 7x = 0

Solving
-21 + 7x = 0

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 7x = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 7x = 0 + 21
7x = 0 + 21

Combine like terms: 0 + 21 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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