X+3+2(x)+x-5=78

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Solution for X+3+2(x)+x-5=78 equation: 


Simplifying
X + 3 + 2(x) + x + -5 = 78

Reorder the terms:
3 + -5 + X + 2x + x = 78

Combine like terms: 3 + -5 = -2
-2 + X + 2x + x = 78

Combine like terms: 2x + x = 3x
-2 + X + 3x = 78

Solving
-2 + X + 3x = 78

Solving for variable 'X'.

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

Add '2' to each side of the equation.
-2 + X + 2 + 3x = 78 + 2

Reorder the terms:
-2 + 2 + X + 3x = 78 + 2

Combine like terms: -2 + 2 = 0
0 + X + 3x = 78 + 2
X + 3x = 78 + 2

Combine like terms: 78 + 2 = 80
X + 3x = 80

Add '-3x' to each side of the equation.
X + 3x + -3x = 80 + -3x

Combine like terms: 3x + -3x = 0
X + 0 = 80 + -3x
X = 80 + -3x

Simplifying
X = 80 + -3x

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