X+(x+9)=87

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Solution for X+(x+9)=87 equation:


Simplifying
X + (x + 9) = 87

Reorder the terms:
X + (9 + x) = 87

Remove parenthesis around (9 + x)
X + 9 + x = 87

Reorder the terms:
9 + X + x = 87

Solving
9 + X + x = 87

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 + x = 87 + -9

Reorder the terms:
9 + -9 + X + x = 87 + -9

Combine like terms: 9 + -9 = 0
0 + X + x = 87 + -9
X + x = 87 + -9

Combine like terms: 87 + -9 = 78
X + x = 78

Add '-1x' to each side of the equation.
X + x + -1x = 78 + -1x

Combine like terms: x + -1x = 0
X + 0 = 78 + -1x
X = 78 + -1x

Simplifying
X = 78 + -1x

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