z-9=5-7

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Solution for z-9=5-7 equation: 


Simplifying
z + -9 = 5 + -7

Reorder the terms:
-9 + z = 5 + -7

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

Solving
-9 + z = -2

Solving for variable 'z'.

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

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

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

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

Simplifying
z = 7

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