(2x-9)+(X+8)=180

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Solution for (2x-9)+(X+8)=180 equation:


Simplifying
(2x + -9) + (X + 8) = 180

Reorder the terms:
(-9 + 2x) + (X + 8) = 180

Remove parenthesis around (-9 + 2x)
-9 + 2x + (X + 8) = 180

Reorder the terms:
-9 + 2x + (8 + X) = 180

Remove parenthesis around (8 + X)
-9 + 2x + 8 + X = 180

Reorder the terms:
-9 + 8 + X + 2x = 180

Combine like terms: -9 + 8 = -1
-1 + X + 2x = 180

Solving
-1 + X + 2x = 180

Solving for variable 'X'.

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

Add '1' to each side of the equation.
-1 + X + 1 + 2x = 180 + 1

Reorder the terms:
-1 + 1 + X + 2x = 180 + 1

Combine like terms: -1 + 1 = 0
0 + X + 2x = 180 + 1
X + 2x = 180 + 1

Combine like terms: 180 + 1 = 181
X + 2x = 181

Add '-2x' to each side of the equation.
X + 2x + -2x = 181 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 181 + -2x
X = 181 + -2x

Simplifying
X = 181 + -2x

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