4z-21=47

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Solution for 4z-21=47 equation: 


Simplifying
4z + -21 = 47

Reorder the terms:
-21 + 4z = 47

Solving
-21 + 4z = 47

Solving for variable 'z'.

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

Add '21' to each side of the equation.
-21 + 21 + 4z = 47 + 21

Combine like terms: -21 + 21 = 0
0 + 4z = 47 + 21
4z = 47 + 21

Combine like terms: 47 + 21 = 68
4z = 68

Divide each side by '4'.
z = 17

Simplifying
z = 17

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