7z-15=12

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Solution for 7z-15=12 equation: 


Simplifying
7z + -15 = 12

Reorder the terms:
-15 + 7z = 12

Solving
-15 + 7z = 12

Solving for variable 'z'.

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

Add '15' to each side of the equation.
-15 + 15 + 7z = 12 + 15

Combine like terms: -15 + 15 = 0
0 + 7z = 12 + 15
7z = 12 + 15

Combine like terms: 12 + 15 = 27
7z = 27

Divide each side by '7'.
z = 3.857142857

Simplifying
z = 3.857142857

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