-3z+8z-4z=-2

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Solution for -3z+8z-4z=-2 equation: 


Simplifying
-3z + 8z + -4z = -2

Combine like terms: -3z + 8z = 5z
5z + -4z = -2

Combine like terms: 5z + -4z = 1z
1z = -2

Solving
1z = -2

Solving for variable 'z'.

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

Divide each side by '1'.
z = -2

Simplifying
z = -2

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