x+(x+4)+(x-1)=57

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Solution for x+(x+4)+(x-1)=57 equation:


Simplifying
x + (x + 4) + (x + -1) = 57

Reorder the terms:
x + (4 + x) + (x + -1) = 57

Remove parenthesis around (4 + x)
x + 4 + x + (x + -1) = 57

Reorder the terms:
x + 4 + x + (-1 + x) = 57

Remove parenthesis around (-1 + x)
x + 4 + x + -1 + x = 57

Reorder the terms:
4 + -1 + x + x + x = 57

Combine like terms: 4 + -1 = 3
3 + x + x + x = 57

Combine like terms: x + x = 2x
3 + 2x + x = 57

Combine like terms: 2x + x = 3x
3 + 3x = 57

Solving
3 + 3x = 57

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + 3x = 57 + -3

Combine like terms: 3 + -3 = 0
0 + 3x = 57 + -3
3x = 57 + -3

Combine like terms: 57 + -3 = 54
3x = 54

Divide each side by '3'.
x = 18

Simplifying
x = 18

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