-7z+4-z=12

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Solution for -7z+4-z=12 equation:


Simplifying
-7z + 4 + -1z = 12

Reorder the terms:
4 + -7z + -1z = 12

Combine like terms: -7z + -1z = -8z
4 + -8z = 12

Solving
4 + -8z = 12

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 + -8z = 12 + -4

Combine like terms: 4 + -4 = 0
0 + -8z = 12 + -4
-8z = 12 + -4

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

Divide each side by '-8'.
z = -1

Simplifying
z = -1

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