7z+z=7z-7

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


Simplifying
7z + z = 7z + -7

Combine like terms: 7z + z = 8z
8z = 7z + -7

Reorder the terms:
8z = -7 + 7z

Solving
8z = -7 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
8z + -7z = -7 + 7z + -7z

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

Combine like terms: 7z + -7z = 0
1z = -7 + 0
1z = -7

Divide each side by '1'.
z = -7

Simplifying
z = -7

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