40=3x+6+x-4+x-4+x

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Solution for 40=3x+6+x-4+x-4+x equation: 


Simplifying
40 = 3x + 6 + x + -4 + x + -4 + x

Reorder the terms:
40 = 6 + -4 + -4 + 3x + x + x + x

Combine like terms: 6 + -4 = 2
40 = 2 + -4 + 3x + x + x + x

Combine like terms: 2 + -4 = -2
40 = -2 + 3x + x + x + x

Combine like terms: 3x + x = 4x
40 = -2 + 4x + x + x

Combine like terms: 4x + x = 5x
40 = -2 + 5x + x

Combine like terms: 5x + x = 6x
40 = -2 + 6x

Solving
40 = -2 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
40 + -6x = -2 + 6x + -6x

Combine like terms: 6x + -6x = 0
40 + -6x = -2 + 0
40 + -6x = -2

Add '-40' to each side of the equation.
40 + -40 + -6x = -2 + -40

Combine like terms: 40 + -40 = 0
0 + -6x = -2 + -40
-6x = -2 + -40

Combine like terms: -2 + -40 = -42
-6x = -42

Divide each side by '-6'.
x = 7

Simplifying
x = 7

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