4z+6=21

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Solution for 4z+6=21 equation: 


Simplifying
4z + 6 = 21

Reorder the terms:
6 + 4z = 21

Solving
6 + 4z = 21

Solving for variable 'z'.

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

Add '-6' to each side of the equation.
6 + -6 + 4z = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 4z = 21 + -6
4z = 21 + -6

Combine like terms: 21 + -6 = 15
4z = 15

Divide each side by '4'.
z = 3.75

Simplifying
z = 3.75

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