x+(x-18)+(x-3)=156

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Solution for x+(x-18)+(x-3)=156 equation:


Simplifying
x + (x + -18) + (x + -3) = 156

Reorder the terms:
x + (-18 + x) + (x + -3) = 156

Remove parenthesis around (-18 + x)
x + -18 + x + (x + -3) = 156

Reorder the terms:
x + -18 + x + (-3 + x) = 156

Remove parenthesis around (-3 + x)
x + -18 + x + -3 + x = 156

Reorder the terms:
-18 + -3 + x + x + x = 156

Combine like terms: -18 + -3 = -21
-21 + x + x + x = 156

Combine like terms: x + x = 2x
-21 + 2x + x = 156

Combine like terms: 2x + x = 3x
-21 + 3x = 156

Solving
-21 + 3x = 156

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 3x = 156 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = 156 + 21
3x = 156 + 21

Combine like terms: 156 + 21 = 177
3x = 177

Divide each side by '3'.
x = 59

Simplifying
x = 59

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