X+(x+4)+(3x-9)=90

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Solution for X+(x+4)+(3x-9)=90 equation:


Simplifying
X + (x + 4) + (3x + -9) = 90

Reorder the terms:
X + (4 + x) + (3x + -9) = 90

Remove parenthesis around (4 + x)
X + 4 + x + (3x + -9) = 90

Reorder the terms:
X + 4 + x + (-9 + 3x) = 90

Remove parenthesis around (-9 + 3x)
X + 4 + x + -9 + 3x = 90

Reorder the terms:
4 + -9 + X + x + 3x = 90

Combine like terms: 4 + -9 = -5
-5 + X + x + 3x = 90

Combine like terms: x + 3x = 4x
-5 + X + 4x = 90

Solving
-5 + X + 4x = 90

Solving for variable 'X'.

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

Add '5' to each side of the equation.
-5 + X + 5 + 4x = 90 + 5

Reorder the terms:
-5 + 5 + X + 4x = 90 + 5

Combine like terms: -5 + 5 = 0
0 + X + 4x = 90 + 5
X + 4x = 90 + 5

Combine like terms: 90 + 5 = 95
X + 4x = 95

Add '-4x' to each side of the equation.
X + 4x + -4x = 95 + -4x

Combine like terms: 4x + -4x = 0
X + 0 = 95 + -4x
X = 95 + -4x

Simplifying
X = 95 + -4x

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