-3z-4z=28

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Solution for -3z-4z=28 equation: 


Simplifying
-3z + -4z = 28

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