7+2z=9+z

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Solution for 7+2z=9+z equation:


Simplifying
7 + 2z = 9 + z

Solving
7 + 2z = 9 + 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.
7 + 2z + -1z = 9 + z + -1z

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

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

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

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

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

Divide each side by '1'.
z = 2

Simplifying
z = 2

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