84=x+(x+10)+(x-10)

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Solution for 84=x+(x+10)+(x-10) equation:


Simplifying
84 = x + (x + 10) + (x + -10)

Reorder the terms:
84 = x + (10 + x) + (x + -10)

Remove parenthesis around (10 + x)
84 = x + 10 + x + (x + -10)

Reorder the terms:
84 = x + 10 + x + (-10 + x)

Remove parenthesis around (-10 + x)
84 = x + 10 + x + -10 + x

Reorder the terms:
84 = 10 + -10 + x + x + x

Combine like terms: 10 + -10 = 0
84 = 0 + x + x + x
84 = x + x + x

Combine like terms: x + x = 2x
84 = 2x + x

Combine like terms: 2x + x = 3x
84 = 3x

Solving
84 = 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
84 + -3x = 3x + -3x

Combine like terms: 3x + -3x = 0
84 + -3x = 0

Add '-84' to each side of the equation.
84 + -84 + -3x = 0 + -84

Combine like terms: 84 + -84 = 0
0 + -3x = 0 + -84
-3x = 0 + -84

Combine like terms: 0 + -84 = -84
-3x = -84

Divide each side by '-3'.
x = 28

Simplifying
x = 28

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