8.5=-z-3

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Solution for 8.5=-z-3 equation:


Simplifying
8.5 = -1z + -3

Reorder the terms:
8.5 = -3 + -1z

Solving
8.5 = -3 + -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
8.5 + z = -3 + -1z + z

Combine like terms: -1z + z = 0
8.5 + z = -3 + 0
8.5 + z = -3

Add '-8.5' to each side of the equation.
8.5 + -8.5 + z = -3 + -8.5

Combine like terms: 8.5 + -8.5 = 0.0
0.0 + z = -3 + -8.5
z = -3 + -8.5

Combine like terms: -3 + -8.5 = -11.5
z = -11.5

Simplifying
z = -11.5

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