7z=12-40

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Solution for 7z=12-40 equation: 


Simplifying
7z = 12 + -40

Combine like terms: 12 + -40 = -28
7z = -28

Solving
7z = -28

Solving for variable 'z'.

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

Divide each side by '7'.
z = -4

Simplifying
z = -4

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