X+3X+3=-1

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Solution for X+3X+3=-1 equation: 


Simplifying
X + 3X + 3 = -1

Reorder the terms:
3 + X + 3X = -1

Combine like terms: X + 3X = 4X
3 + 4X = -1

Solving
3 + 4X = -1

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 + 4X = -1 + -3

Combine like terms: 3 + -3 = 0
0 + 4X = -1 + -3
4X = -1 + -3

Combine like terms: -1 + -3 = -4
4X = -4

Divide each side by '4'.
X = -1

Simplifying
X = -1

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