X+(x+5)+(x+4)=99

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Solution for X+(x+5)+(x+4)=99 equation:


Simplifying
X + (x + 5) + (x + 4) = 99

Reorder the terms:
X + (5 + x) + (x + 4) = 99

Remove parenthesis around (5 + x)
X + 5 + x + (x + 4) = 99

Reorder the terms:
X + 5 + x + (4 + x) = 99

Remove parenthesis around (4 + x)
X + 5 + x + 4 + x = 99

Reorder the terms:
5 + 4 + X + x + x = 99

Combine like terms: 5 + 4 = 9
9 + X + x + x = 99

Combine like terms: x + x = 2x
9 + X + 2x = 99

Solving
9 + X + 2x = 99

Solving for variable 'X'.

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

Add '-9' to each side of the equation.
9 + X + -9 + 2x = 99 + -9

Reorder the terms:
9 + -9 + X + 2x = 99 + -9

Combine like terms: 9 + -9 = 0
0 + X + 2x = 99 + -9
X + 2x = 99 + -9

Combine like terms: 99 + -9 = 90
X + 2x = 90

Add '-2x' to each side of the equation.
X + 2x + -2x = 90 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 90 + -2x
X = 90 + -2x

Simplifying
X = 90 + -2x

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