4x+9=-8x-15

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Solution for 4x+9=-8x-15 equation:


Simplifying
4x + 9 = -8x + -15

Reorder the terms:
9 + 4x = -8x + -15

Reorder the terms:
9 + 4x = -15 + -8x

Solving
9 + 4x = -15 + -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
9 + 4x + 8x = -15 + -8x + 8x

Combine like terms: 4x + 8x = 12x
9 + 12x = -15 + -8x + 8x

Combine like terms: -8x + 8x = 0
9 + 12x = -15 + 0
9 + 12x = -15

Add '-9' to each side of the equation.
9 + -9 + 12x = -15 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = -15 + -9
12x = -15 + -9

Combine like terms: -15 + -9 = -24
12x = -24

Divide each side by '12'.
x = -2

Simplifying
x = -2

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