9x+40=-x

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Solution for 9x+40=-x equation:


Simplifying
9x + 40 = -1x

Reorder the terms:
40 + 9x = -1x

Solving
40 + 9x = -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
40 + 9x + x = -1x + x

Combine like terms: 9x + x = 10x
40 + 10x = -1x + x

Combine like terms: -1x + x = 0
40 + 10x = 0

Add '-40' to each side of the equation.
40 + -40 + 10x = 0 + -40

Combine like terms: 40 + -40 = 0
0 + 10x = 0 + -40
10x = 0 + -40

Combine like terms: 0 + -40 = -40
10x = -40

Divide each side by '10'.
x = -4

Simplifying
x = -4

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