2z=13-15

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Solution for 2z=13-15 equation: 


Simplifying
2z = 13 + -15

Combine like terms: 13 + -15 = -2
2z = -2

Solving
2z = -2

Solving for variable 'z'.

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

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

Simplifying
z = -1

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