7z=13-20

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Solution for 7z=13-20 equation: 


Simplifying
7z = 13 + -20

Combine like terms: 13 + -20 = -7
7z = -7

Solving
7z = -7

Solving for variable 'z'.

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

Divide each side by '7'.
z = -1

Simplifying
z = -1

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