3z-7z=-28

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Solution for 3z-7z=-28 equation: 


Simplifying
3z + -7z = -28

Combine like terms: 3z + -7z = -4z
-4z = -28

Solving
-4z = -28

Solving for variable 'z'.

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

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

Simplifying
z = 7

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