9=-7(x+3)-8x

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Solution for 9=-7(x+3)-8x equation:


Simplifying
9 = -7(x + 3) + -8x

Reorder the terms:
9 = -7(3 + x) + -8x
9 = (3 * -7 + x * -7) + -8x
9 = (-21 + -7x) + -8x

Combine like terms: -7x + -8x = -15x
9 = -21 + -15x

Solving
9 = -21 + -15x

Solving for variable 'x'.

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

Add '15x' to each side of the equation.
9 + 15x = -21 + -15x + 15x

Combine like terms: -15x + 15x = 0
9 + 15x = -21 + 0
9 + 15x = -21

Add '-9' to each side of the equation.
9 + -9 + 15x = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 15x = -21 + -9
15x = -21 + -9

Combine like terms: -21 + -9 = -30
15x = -30

Divide each side by '15'.
x = -2

Simplifying
x = -2

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