7z-9z=-4z-4-8z

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Solution for 7z-9z=-4z-4-8z equation:


Simplifying
7z + -9z = -4z + -4 + -8z

Combine like terms: 7z + -9z = -2z
-2z = -4z + -4 + -8z

Reorder the terms:
-2z = -4 + -4z + -8z

Combine like terms: -4z + -8z = -12z
-2z = -4 + -12z

Solving
-2z = -4 + -12z

Solving for variable 'z'.

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

Add '12z' to each side of the equation.
-2z + 12z = -4 + -12z + 12z

Combine like terms: -2z + 12z = 10z
10z = -4 + -12z + 12z

Combine like terms: -12z + 12z = 0
10z = -4 + 0
10z = -4

Divide each side by '10'.
z = -0.4

Simplifying
z = -0.4

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