6=z+15

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Solution for 6=z+15 equation:


Simplifying
6 = z + 15

Reorder the terms:
6 = 15 + z

Solving
6 = 15 + 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.
6 + -1z = 15 + z + -1z

Combine like terms: z + -1z = 0
6 + -1z = 15 + 0
6 + -1z = 15

Add '-6' to each side of the equation.
6 + -6 + -1z = 15 + -6

Combine like terms: 6 + -6 = 0
0 + -1z = 15 + -6
-1z = 15 + -6

Combine like terms: 15 + -6 = 9
-1z = 9

Divide each side by '-1'.
z = -9

Simplifying
z = -9

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