-8z-9=-7z

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


Simplifying
-8z + -9 = -7z

Reorder the terms:
-9 + -8z = -7z

Solving
-9 + -8z = -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.
-9 + -8z + 7z = -7z + 7z

Combine like terms: -8z + 7z = -1z
-9 + -1z = -7z + 7z

Combine like terms: -7z + 7z = 0
-9 + -1z = 0

Add '9' to each side of the equation.
-9 + 9 + -1z = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -1z = 0 + 9
-1z = 0 + 9

Combine like terms: 0 + 9 = 9
-1z = 9

Divide each side by '-1'.
z = -9

Simplifying
z = -9

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