7z-9=8z-2z

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Solution for 7z-9=8z-2z equation:


Simplifying
7z + -9 = 8z + -2z

Reorder the terms:
-9 + 7z = 8z + -2z

Combine like terms: 8z + -2z = 6z
-9 + 7z = 6z

Solving
-9 + 7z = 6z

Solving for variable 'z'.

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

Add '-6z' to each side of the equation.
-9 + 7z + -6z = 6z + -6z

Combine like terms: 7z + -6z = 1z
-9 + 1z = 6z + -6z

Combine like terms: 6z + -6z = 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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