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

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


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

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

Remove parenthesis around (-5 + 2x)
3x + x + -5 + 2x = 78

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

Combine like terms: 3x + x = 4x
-5 + 4x + 2x = 78

Combine like terms: 4x + 2x = 6x
-5 + 6x = 78

Solving
-5 + 6x = 78

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 + 5 + 6x = 78 + 5

Combine like terms: -5 + 5 = 0
0 + 6x = 78 + 5
6x = 78 + 5

Combine like terms: 78 + 5 = 83
6x = 83

Divide each side by '6'.
x = 13.83333333

Simplifying
x = 13.83333333

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