7z-3=15

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Solution for 7z-3=15 equation: 


Simplifying
7z + -3 = 15

Reorder the terms:
-3 + 7z = 15

Solving
-3 + 7z = 15

Solving for variable 'z'.

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

Add '3' to each side of the equation.
-3 + 3 + 7z = 15 + 3

Combine like terms: -3 + 3 = 0
0 + 7z = 15 + 3
7z = 15 + 3

Combine like terms: 15 + 3 = 18
7z = 18

Divide each side by '7'.
z = 2.571428571

Simplifying
z = 2.571428571

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