=X-(-3x)

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Solution for =X-(-3x) equation:


Simplifying
0 = X + -1(-3x)

Remove parenthesis around (-3x)
0 = X + -1 * -3x

Multiply -1 * -3
0 = X + 3x

Solving
0 = X + 3x

Solving for variable 'X'.

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

Add '-1X' to each side of the equation.
0 + -1X = X + -1X + 3x
Remove the zero:
-1X = X + -1X + 3x

Combine like terms: X + -1X = 0
-1X = 0 + 3x
-1X = 3x

Divide each side by '-1'.
X = -3x

Simplifying
X = -3x

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