84=x+(x+18)

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Solution for 84=x+(x+18) equation:


Simplifying
84 = x + (x + 18)

Reorder the terms:
84 = x + (18 + x)

Remove parenthesis around (18 + x)
84 = x + 18 + x

Reorder the terms:
84 = 18 + x + x

Combine like terms: x + x = 2x
84 = 18 + 2x

Solving
84 = 18 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
84 + -2x = 18 + 2x + -2x

Combine like terms: 2x + -2x = 0
84 + -2x = 18 + 0
84 + -2x = 18

Add '-84' to each side of the equation.
84 + -84 + -2x = 18 + -84

Combine like terms: 84 + -84 = 0
0 + -2x = 18 + -84
-2x = 18 + -84

Combine like terms: 18 + -84 = -66
-2x = -66

Divide each side by '-2'.
x = 33

Simplifying
x = 33

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