7z-4+8-5z=

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Solution for 7z-4+8-5z= equation:


Simplifying
7z + -4 + 8 + -5z = 0

Reorder the terms:
-4 + 8 + 7z + -5z = 0

Combine like terms: -4 + 8 = 4
4 + 7z + -5z = 0

Combine like terms: 7z + -5z = 2z
4 + 2z = 0

Solving
4 + 2z = 0

Solving for variable 'z'.

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

Add '-4' to each side of the equation.
4 + -4 + 2z = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 2z = 0 + -4
2z = 0 + -4

Combine like terms: 0 + -4 = -4
2z = -4

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

Simplifying
z = -2

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