6(z+1)=21

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Solution for 6(z+1)=21 equation: 


Simplifying
6(z + 1) = 21

Reorder the terms:
6(1 + z) = 21
(1 * 6 + z * 6) = 21
(6 + 6z) = 21

Solving
6 + 6z = 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 + 6z = 21 + -6

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

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

Divide each side by '6'.
z = 2.5

Simplifying
z = 2.5

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