-7z+9=-8z

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


Simplifying
-7z + 9 = -8z

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

Solving
9 + -7z = -8z

Solving for variable 'z'.

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

Add '8z' to each side of the equation.
9 + -7z + 8z = -8z + 8z

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

Combine like terms: -8z + 8z = 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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