6-15=z

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Solution for 6-15=z equation:


Simplifying
6 + -15 = z

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

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

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

Add '9' to each side of the equation.
-9 + 9 + -1z = 0 + 9

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

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

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

Simplifying
z = -9

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