9=-7z-40

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Solution for 9=-7z-40 equation:


Simplifying
9 = -7z + -40

Reorder the terms:
9 = -40 + -7z

Solving
9 = -40 + -7z

Solving for variable 'z'.

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

Add '7z' to each side of the equation.
9 + 7z = -40 + -7z + 7z

Combine like terms: -7z + 7z = 0
9 + 7z = -40 + 0
9 + 7z = -40

Add '-9' to each side of the equation.
9 + -9 + 7z = -40 + -9

Combine like terms: 9 + -9 = 0
0 + 7z = -40 + -9
7z = -40 + -9

Combine like terms: -40 + -9 = -49
7z = -49

Divide each side by '7'.
z = -7

Simplifying
z = -7

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