X+9=-3X-7

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Solution for X+9=-3X-7 equation:


Simplifying
X + 9 = -3X + -7

Reorder the terms:
9 + X = -3X + -7

Reorder the terms:
9 + X = -7 + -3X

Solving
9 + X = -7 + -3X

Solving for variable 'X'.

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

Add '3X' to each side of the equation.
9 + X + 3X = -7 + -3X + 3X

Combine like terms: X + 3X = 4X
9 + 4X = -7 + -3X + 3X

Combine like terms: -3X + 3X = 0
9 + 4X = -7 + 0
9 + 4X = -7

Add '-9' to each side of the equation.
9 + -9 + 4X = -7 + -9

Combine like terms: 9 + -9 = 0
0 + 4X = -7 + -9
4X = -7 + -9

Combine like terms: -7 + -9 = -16
4X = -16

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

Simplifying
X = -4

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