9-z=7+z

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Solution for 9-z=7+z equation:


Simplifying
9 + -1z = 7 + z

Solving
9 + -1z = 7 + z

Solving for variable 'z'.

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

Add '-1z' to each side of the equation.
9 + -1z + -1z = 7 + z + -1z

Combine like terms: -1z + -1z = -2z
9 + -2z = 7 + z + -1z

Combine like terms: z + -1z = 0
9 + -2z = 7 + 0
9 + -2z = 7

Add '-9' to each side of the equation.
9 + -9 + -2z = 7 + -9

Combine like terms: 9 + -9 = 0
0 + -2z = 7 + -9
-2z = 7 + -9

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

Divide each side by '-2'.
z = 1

Simplifying
z = 1

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