3z-7=12

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Solution for 3z-7=12 equation: 


Simplifying
3z + -7 = 12

Reorder the terms:
-7 + 3z = 12

Solving
-7 + 3z = 12

Solving for variable 'z'.

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

Add '7' to each side of the equation.
-7 + 7 + 3z = 12 + 7

Combine like terms: -7 + 7 = 0
0 + 3z = 12 + 7
3z = 12 + 7

Combine like terms: 12 + 7 = 19
3z = 19

Divide each side by '3'.
z = 6.333333333

Simplifying
z = 6.333333333

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