84=(x+x)+(2x+6)

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Solution for 84=(x+x)+(2x+6) equation:


Simplifying
84 = (x + x) + (2x + 6)

Combine like terms: x + x = 2x
84 = (2x) + (2x + 6)
84 = (2x) + (2x + 6)

Reorder the terms:
84 = (2x) + (6 + 2x)

Remove parenthesis around (6 + 2x)
84 = (2x) + 6 + 2x

Reorder the terms:
84 = 6 + (2x) + 2x

Combine like terms: (2x) + 2x = 4x
84 = 6 + 4x

Solving
84 = 6 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
84 + -4x = 6 + 4x + -4x

Combine like terms: 4x + -4x = 0
84 + -4x = 6 + 0
84 + -4x = 6

Add '-84' to each side of the equation.
84 + -84 + -4x = 6 + -84

Combine like terms: 84 + -84 = 0
0 + -4x = 6 + -84
-4x = 6 + -84

Combine like terms: 6 + -84 = -78
-4x = -78

Divide each side by '-4'.
x = 19.5

Simplifying
x = 19.5

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