z+18=7

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Solution for z+18=7 equation: 


Simplifying
z + 18 = 7

Reorder the terms:
18 + z = 7

Solving
18 + z = 7

Solving for variable 'z'.

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

Add '-18' to each side of the equation.
18 + -18 + z = 7 + -18

Combine like terms: 18 + -18 = 0
0 + z = 7 + -18
z = 7 + -18

Combine like terms: 7 + -18 = -11
z = -11

Simplifying
z = -11

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