9-7z=-9-5z

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Solution for 9-7z=-9-5z equation:


Simplifying
9 + -7z = -9 + -5z

Solving
9 + -7z = -9 + -5z

Solving for variable 'z'.

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

Add '5z' to each side of the equation.
9 + -7z + 5z = -9 + -5z + 5z

Combine like terms: -7z + 5z = -2z
9 + -2z = -9 + -5z + 5z

Combine like terms: -5z + 5z = 0
9 + -2z = -9 + 0
9 + -2z = -9

Add '-9' to each side of the equation.
9 + -9 + -2z = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -2z = -9 + -9
-2z = -9 + -9

Combine like terms: -9 + -9 = -18
-2z = -18

Divide each side by '-2'.
z = 9

Simplifying
z = 9

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